Why disconnection punishment?

The site has disconnection punishment of sorts, as once a player disconnects the game ends after 1 min or 2.5 mins or so ...depending on the format, even if the disconnected player has a lot of time left on the clock.

For example in a 30 min rapid game, even if I have 15 mins left and get disconnected the game ends in 2.5 mins.

I feel this is unfair. Disconnections happen and why should a disconnection lead to the player being penalised on the clock with a quick defeat. The player has 15 mins left and he should be allowed 15 mins to reconnect.

A disconnected player is no different from a player thinking. He makes no moves and his clock runs down. If the player reconencts he should be allowed to rejoin and keep playing with whatever time he has still to go on the clock.

I know this can be misused, but when you join for a game, your opponent has a time limit to finish the game. 1 min or 3 min or 5 or 15 or 30 mins, whatever it is. What he does in this time, whether he moves or just disconnects and loses, is his business.

I often feel disconnected...

My knee-jerk reaction is to disagree with you and to ruthlessly point out any faults in your logic, but you're not giving me much to work with here -- you make a pretty good case.  

Sounds fair to me.

1.) For example in a 30 min rapid game, even if I have 15 mins left and get disconnected the game ends in 2.5 mins.

This is necessary to prevent people from sitting there for 15 minutes.  Unfortunatelly, since you dont encounter people in OTB play that will just get up and leave after blundering, like you do online.  

2.) I feel this is unfair. Disconnections happen and why should a disconnection lead to the player being penalised on the clock with a quick defeat. The player has 15 mins left and he should be allowed 15 mins to reconnect.

It should not take anyone 15 minutes to reconnect.  And, you dont know the reaosn for the disconnect.  

3.) A disconnected player is no different from a player thinking. He makes no moves and his clock runs down. If the player reconencts he should be allowed to rejoin and keep playing with whatever time he has still to go on the clock.

IF people online would not abandon games, I would agree with you.  But its a compromise.  Imagine playing a 2 hour game, and your opponent blunders his queen on move 6, and abandons the game.  Do you seriously want to site there and wait for the win?

4.) I know this can be misused, but when you join for a game, your opponent has a time limit to finish the game. 1 min or 3 min or 5 or 15 or 30 mins, whatever it is. What he does in this time, whether he moves or just disconnects and loses, is his business.

You answered your own question.  "I know this can be misused"  Unfortunately...chess.com has to make such allowances for online play.  

I don't see an opponent wasting his clock with a disconnection as a bother. If I join a 1 min game, I expect to be in the game for 2 mins, and if I sign up for a 30 min game, I expect to be in the game for 1 hr.

What the opponent does in his time is his bother. An opponent can choose to desert his game, but I signed up for a 1 hr game.

I don't see it as a problem. However no disconnection punishment will save a lot of genuinely disconnected people from having their game ruined.

If the opponent rejoins then

JayeshSinhaChess

it is very simple. The punishment is to prevent people from disconnecting from a lost position and forcing the winner to wait as a punishment them for winning. You play 30 minute game, and have someone beat in 5. They disconnect and make you wait 25 minutes. Maybe you planned on playing for 60, but playing a game or sitting at a game where you have one move to make to win is two different things. i.e. one is interesting /fun the other is boring. 

Unfortunately there is no way to tell a disconnect on purpose from a disconnect from technical difficulties.

I just had that exp. here.

When I used to play longer timeframes like 30mins I had maybe hundred times where people just left because they didn't care the game anymore. Then letting the opponent wait 10 or even 15 mins has nothing to do with chess, thats just bad attitude. Usually blocking them helps not to play them again.

Actually this is yet another example of an user complaining but himself like a ... very active with his not so creative vulgar vocabulary on the board of his opponent 30 days ago. Thats even worse.

No one has asked for your aggressive, intolerant, disrespectful comment.

 @EinsteinChess - So till my chess rating improves I should stop talking? Were you dropped on your head when you were a child?

Well the answer seems obvious, so let me rephrase. Who dropped you on your head when you were a child?

The remedy is 1mnt-30 secs,3mnts-1mnt,5mnts-90 secs,10mnts-2mnts,15mnts-3mnts,25mnts-5mnts,30mnts-6 mnts..this is the max.time allotted for a move..so it works both ways for people who abandon also..when using net setter I used to lose more than half my games due to this but

after acquiring a broad band connection this problem is not there except when the chess .com

server gets disconnected and I lose for no fault of mine but the last one is only sometimes..

you can't know whether it's the problem of the server / app on your phone. It depends on the protocol implemented on top of TCP. There it's specified how a lost connection is treated. I.e. Write Failure, Timeout, whatever. A wrong understanding of the necessary implementation to deal with a client disconnection can lead to the above problems. BUT we are not aware of the details. The only thing we know is that many user are just running away when losing, then the user is the problem not the software.