Queenside or Kingside Castling?

Personally I prefer queenside because the rook has a lot of power on d4 but for some reason kingside is way more popular

I guess

when I do scilian defense though its easier to queenside

I actually made a chess video months ago on this exact topic (this is back before I had a webcam). I recommend checking out this video for the pros and cons of kingside versus queenside castling. I also go over several example positions in the video to help people start thinking about castling in a reasoned way:

Well it often depends, but kingside castling is more popular for a reason. Its easier to get 2 pieces out to castle than 3, it's often a lot safer, and you often have to push ur a/h pawn and move your king to the corner, It's often just quite inconvenient. And even if you want an attacking game, you're usually gonna be the one to be attacked first. But dont get me wrong, sometimes castling queenside can be quite good in certain situations, for example against the englund gambit, french exchange, etc.

I'll check it out

I usually have the knight on c3 (as white) so all pawns are defended and if not I push the b/g pawn to prevent diagonal attacks

Always castle one way and not the other no matter the context.

Nice joke, but sometimes it is actually best to not castle at all These cases are more rare, but it all depends on King safety and the exact position.

Sometimes it depends on the opening or position

In general, it is better to castle kingside because it puts the king farther from the center and you usually don't have to worry about an advanced d-pawn, for example. However there are times when queenside castling is the better choice.

Thats a great video @KesetoKaiba ! Earned a sub

I think same-side castling v. opposite-side castling is the real question

It literally just depends on what opening you play and how it develops.

That might be the case. It also depends on your pawn structure