There's an actual purpose for it. Not just to get a good feeling..
Honestly down the line when trying to have a kid, I think it would be so amazing to have sex without worries trying to have a kid. That alot different than "baby I love you, lets have sex".
When Im trying to have a child I dont want the experience to be watered down. I truly think the high divorce rate today can be constributed to the modern openness of sexuality.
Ehh dont feel like getting too into it.
Simple cliff notes: sex is to make offspring, that's it's natural purpose.