I just deal with it being uncomfortable. I usually take like 5 or 6 with me everyday and I just got use to it. lol
Same here. The only thing I can really suggest is more pockets.

I think the reason for me carrying around so many decks though is because I practice with cards constantly like 24 - 7 and never really stop so my cards get worn out pretty quick and I kinda like to change throughout the decks so that the other decks I'm not using have time to dry out from the moisture of my hands and bend back into place. When performing though I usually only take out one normal bicycle deck and use that. A single deck will easily last a full performance for me. I only have so many different decks because playing with cards is what I do with almost every spare minute of my time. I guess these are the specific reasons for each deck:
1 deck that is kinda of old and clumpy that I don't mind getting too ruined so that I can practice with it
1 deck that handles extremely well for card flourishing
1 deck that I can totally ruin or use to put duplicates in other decks
1 deck of normal bikes that I use for performances
1 deck of backup bikes just in case my normal ones get ruined unexpectedly
1 deck of bikes that's an invisible deck because that's gotta be one of the greatest outs ever if you screw up