I gave up my half share in a C150 when I moved house nearly two years ago, and I still miss it.
Easy to fly, easy to land, reliable little aeroplane. Not particularly fast or exciting of course. Not good for touring unless you have two light people who can carry minimal luggage...and we flew to Austria in ours, since we fitted those criteria. It doesn't like being at 5000 ft over mountains in hot weather though, as I think someone has said.
The 150 had numerous flaps problems resulting in a lot of crashes.
Not true,
AFAIK. As others have said, the 40 degree flap setting has caught out the unwary, that's all. I used it once to make sure I could if I needed to (eg, very short field); after that I never used more than 30 degrees.
Only problem I remember - that Continental engine is VERY prone to carb icing. Use carb heat frequently...and then a bit more. Keep an eye on your RPM, listen to your engine, and be extra careful in warm, damp conditions.
But overall, nice little aeroplane - I miss her.