Shopping for condoms is very embarrassing

Firstly I don't understand why I need them if I'm only going to be likely to date women in my age range as pregnancy is pretty much an impossibility and the chance that a women younger than 50 would have any sexual interest in me is basically nil. Secondly, to actually have a woman in her 50's ask about them seems really wierd and as I've hardly dated and basically has little or no sex since my last partner discarded me intimately I never considered it would become part of the equation. Third, I'm embarassed and scared to talk about sex in person with anyone, so anything to do with that is kind-of included in that balloon.