I'm not worried that playing daily will make it harder for me to play with shorter time controls because I have no interest in playing with shorter time controls, LOL. During my 40 years in the corporate world I had to keep to a schedule set by my employers. Now that I'm retired I don't want the obligation to be logged on at a certain time of day to play chess for a certain length of time. In my daily games I try to make moves as quickly as possible, but some days I just don't feel like making a move or even studying a game.
And I don't use databases. I am trying to memorize the first couple moves of some openings, but that's it. I understand that it can get boring to play a game that goes on for weeks, but it's often fun to wake up and wonder what surprises my opponent has for me today. I hope my opponents have the same sense of anticipation, although at my level of skill I doubt it, haha.
Losing a daily game is like dying by a thousand cuts. I've been told by my betters that at my level (1074) I should never resign. There is no end to the possible mistakes that can be made by the players I play. My opponents aren't GMs. But, dayyum, it's maddening watching your game go down the toilet day by day! (Okay, thanks for listening. I'm better now.)
So correct me if I'm wrong here but you have no losses in Daily chess to even talk about. You're only two losses are in the three check variant against a player rated 800 points higher than you. So what exactly is this threat about?