Honestly, why do men (and in fact, women) worry so much at the thought of a beautiful human being knocking on their door (likely to be in their 20s and 30s) to say hello?!!!?! Is it that bad to offer life?!! And offer a childless helpless couple the chance of parenthood?!!!! geez louise! I'm braver than that...and thank God my egg donor friend-of-a-friend is too!!!!!!! Blessed are the selfless.
Like TeniBear said, it is not really as simple as some people think it is.

Also, some people do not really think about the reality of what is actually involved. If you really want to find out what it would possibly be like then post the following information on the internet in a publicly viewable place: your full name, your date of birth, place of birth, your private home address, ethnicity and physical characteristics, any medical or genetic history relevance, and the sex and year of birth of each of your own children. Now when a complete stranger turns up on your doorstep unexpected and uninvited, what will you do? No difference really ... the adult offspring are complete strangers who are unexpected and uninvited, and you know nothing about them or their intentions.