IIN that I feel bad/protective towards younger 'slutty' girls?

True, no doubt an older virgin could be damaged by similar experiences; and yet older women aren't the subject of my protective instinct, so i can't really comment.

I would argue though, that young and not fully mature girls are far less likely to be equipped to deal with the issues (whether psychological, emotional or physical) that sex is going to inevitably cause. Surely an older person (virgin or otherwise), is going to be more grounded, be better informed, have a better support network and simply have higher self esteem, all of which would make sex a more positive thing?