While I wouldn't neccessarily say that I 'loved' all the 100 + types that I have flown, I must say that there has always been a level of enjoyment. Can't say that I really hate any, but some were definately more frustrating than others (PA25-260 with wing tip tanks that ALWAYS fed unevenly was sometimes a real pig when spraying on a windy day). Still it's all character building really.
I have flown many of the hates here and found very few of the 'faults' listed that were actually the planes fault. If you want to learn aero's properly start in a 150 aerobat, master that and everything else is easy because you have learned to fly aero's properly, it is an excellent trainer and enrgy conservation is everything. Would I rather fly an S1S or a flogged out old C150a?...it would depend on the day and I wouldn't be disappointed with either.
Like the Scots say about the water of life:
"There's Whuskie, and there's guid whuskie, but there's nae bud whuskie"
Even that scabby old Pawnee taught be just a little bit more about getting the best out of anything that I fly.
HD