Same I know why people do it. It's just a fun activity to do with someone for a lot of people like playing a game. It isn't like that for me though. I can't imagine letting someone I love to touch me like that. I wouldn't want to be with someone that have sex with anyone just because either. I don't care if my friends/family/etc do it and they do lol A lot of people my age are very casual and open about sex.
i feel like in my case, its not like I don't value myself but more like I yearn for physical touch and I don't have it in me to commit to a relationship yet so I keep things casual. ig i just have a different mentality in terms of my sex life. that's prolly why I'm able to have sexual relations with someone i don't love, i just view my sexual life and love life as different things. i prolly didn't explain anything well but that's my take on it.

Maybe it is because I am demisexsual but I will never understand how people can have sex someone they don't even love. I kinda little bit understand people who has friends with benefits when they don't have someone they love but when they have someone they love how can they still be with other people, I just don't get it. Because for me it is really impossible. Every person is different I guess.