Everyone is entitled to their opinion, so if this girl finds it degrading then so be it.
I have never felt it. That is actually one of the funniest things I have ever heard. Lol.
I don't like it because my body rejects ejaculation for some reason and I get an infection every single stinkin time it gets in me.
Whether or not your girlfriend is on the pill, she can still get pregnant. It happens everyday, so I will not lecture you, but it is very irresponsible to not use condoms if you do not want babies.
And just because someone ejaculating inside of you is how babies are made doesn't make it pleasurable or anything. How many people are really having sex to procreate? Not many.