reallytired I think you are making too many assumptions that everyone reacts the same to the drugs and psychologically (particularly as you havent been through it yourself).
It really does depend on the person. I have known some people for whom one failed attempt was enough, it really affected them so badly that they gave up their job and took months to recover. I have also known people to get seriously ill from the side effects of the drugs.
As for myself, I didnt really get any side effects from the drugs themselves and picked myself up relatively quickly after the failed attempts, yes they hurt but I had other things in my life too. During ttc, I also got married, got a PhD, got several new promotions and jobs and travelled extensively - I just had in the back of my mind that I wasnt ready to give up.
I absolutely detest this common misconception which to me boreders on mysogyny that infertile women are a bit loony, damaged, cant make sensible decisions and need others to decide what they are "allowed" to do to have a baby.
The long term implications of taking fertility drugs is not yet understood and while there are fears, there is no real evidence yet. Besides, other things where there is a direct link to cancer are sold/used daily.
Personally, I have never been happier since finally conceiving my DD, I cannot imagine how less rich my life would be without her and I dont think anyone else has the right to tell me I should have given up after 3 attempts due to some no doubt well meaning assumptions that they have made.
I knew someone would throw in the "why dont they adopt" argument eventually. I think you will find that most people facing infertility do consider adoption, but for many reasons it may not be right for them, or possible. My DH had very good personal experience reasons for wanting to rule out adoption, but from speaking with adopters and exploring the topic I would imagine the process to be even more psychologically gruelling than several cycles of IVF.