Lets be honest
Preseason trauma in matches is also and mostly ebcause the ppl attitude in the matches.
I've had a really awful spree of matches where ppl seemed to have forgotten what "map awarness" is, junglers refusing to gank and if they do it is when the laner is not there or totally oom, tanks refusing to meat-wall squishies or to CC reactively. It's like I'm playing with a bunch of lvl 1 newbies who never had a pc before nor any notion of what to do outside of eating and sleeping.
Add to this the bugs, the exploits and the confusions of the new masteries and items and you have something comparable to elo-hell. I'm taking a break until Riot fixes/balances some things and ppl get their sanity back.