Never really took part in that debate because I love all airplanes...just wanna grumble a bit. Was putting the club's 152 away after a rather cold and bumpy flight this morning, complete with a couple of minor mishaps. On takeoff, it started getting mighty nippy in the cockpit. I already knew this club plane(read: beaten mule) had no window seals to speak of, and with surface temps around 10F, I was considering just turning back and landing if the heater couldn't keep up. Looked around and saw that my door was wide open! Okay, no worries, got it trimmed for climb and once everything was stabilized, I closed it. Was still a bit chilly but I decided to continue the flight. Flew into a new airport in prep for an upcoming stage check. Nice little strip but tucked into some mountains with rising terrain on three sides. At first glance it almost looks one-way in, one-way out. But I know that it's not, so I visualized my escape plan and decided to challenge myself to land there. Approach was looking pretty good, until I caught a sudden NASTY crosswind that rolled me hard to the left about 2mile final. Probably could have recovered and landed but was already thrown off my game and destabilized, so I decided to get outta dodge before I pushed my luck/limits in mountain terrain. Used my escape plan through one of the valleys, had plenty of room but was still much closer to terrain than I'm used to. I'll do it again with a CFI shortly. Anywho, diverted to a different field i wanted to visit anyway, and eventually got the plane back home. Started doing all the post-flight stuff, and getting it pushed back and plugged in for the next member. Now, I'm pretty good at tucking my head down around the wing as my PPL training was all in a 172. However, I keep forgetting how much shorter a 152 is in comparison as I haven't flown this bird nearly as much. So as I turned around to finally grab my bag off the seat and leave, WHAM! Got a forehead full of the flap's trailing edge, full force. Man, I was seeing stars for a good minute, and the lump on my head is still throbbing its reminder to watch where the hell I'm going. Laughter and self-deprecation aside, It was a good flight. Lessons learned(or more-so reinforced): Don't get frazzled by unexpected distractions in critical phases of flight. Fly the plane and sort the problem out when you have time. Wasn't my first popped-open door, won't be the last. Never be afraid to abort/go around. Being stubborn is what gets pilots in trouble, and being uncomfortable/unstabilized is when pilots make mistakes. Always have an escape plan. "If things get hairy in the next 5 seconds, where am I gonna go?" Winter ops - watch for ice on the ground. Brakes won't help you without tire traction. Similarly, watch where you put your feet when climbing out of the plane. Also, being cold can be a huge distraction, and affect your judgement. Don't be tough and embark on a flight if your heater/clothing can't keep up. Few things amplify get-there-itis like chattering teeth. You should also be dressed appropriately should you lose your heat anyway. Fly safe, y'all.