I fly about 6 - 8 times a year for work, and I truthfully don't think the procedures are that bad or that a lot of the current fuss is warranted.
I've been patted down several times for wearing an underwire bra. Yeah, I'd rather not have to do that again, but it's a female TSA agent and they are as polite and respectful as possible. And it's not like being groped - they feel around enough on the side and below your breast to determine that it's an underwire bra. I always do the full body scan because of my knee replacement, it's no biggie. I tell them as I approach the scanner that I have a knee replacement and I need to do the full body scan or be wanded. Not telling them beforehand and waiting until the metal detector beeps increases the liklihood of being singled out for special treatment.
Here's my advice: if you know you're going to go through security, be sensible about it. WEAR A SPORTS BRA. Wear slip on shoes or loafers, not tie shoes. Avoid a lot of heavy metal jewelry, belt buckles, change, car keys, etc. If you have body piercings or body jewelry, take them out before security. THINK about what you put in your carry on. A lot of stuff that's absolutely fine to be checked can be a problem in the carry on.
IME, the TSA agents are helpful, polite and trying to get through their day with as little grief as possible, I think a polite and respectful attitude back towards them does a world of good.
However, as a plump, silver haired, 52 year old business traveler, I probably don't arouse a lot of terrorist suspicion.