On one hand I don't really mind that I'm not on many painkillers (they're just a small step up from OTC — I turned down heavier ones — and because I don't take as many as I am allowed), because I prefer to be aware of what's going on in my body than not. On the other hand, I wish I'd been doped up to the point of not knowing quite what's real and what's not for this video… ah, Klingon Karaoke night.
“There is no one who, after having endured pain or sickness, does not experience the slightest, vaguest twinge of regret. Although longing to recover, those who suffer intensely for a long time sense an irreparable loss in their improvement. If pain is part of your being, overcoming it is like a loss and causes a pang of regret. I owe to suffering the best parts of myself as well as all that I have lost in my life. Therefore I cannot curse or love suffering.”
- E.M.Cioran, The Ambiguity of Suffering (1934)
They told me that after the tumor is removed (so far they've just removed a piece of it, and it's still inconclusive whether I'll be losing any of my tibia or not), that it'll take my brain a while to train itself not to have pain there, which is sort of neat.
Other than that, here's something to think about. In the 1940s (and before) an amateur aviator named Adalbert Schmid flew a series of DIY orinthopters (airplanes with “flapping” wings instead of propellers). His vehicles had three to ten horsepower engines, and could fly as fast as 120 kph. Oh, and so you can compare the efficiency of flying to your 16MPG SUV, his airplanes got almost 160MPG.
That said, they couldn't tow a boat.