Hate for Premarital sex. These things?

Hello doctor, I see lotta people talk about having premarital sex, multiple partners, one night stands etc.. Girls talking about sex with boyfriend..Boys talking about sex with girlfriend.. Is this a right thing to do? Not just that, they talk about having multiple partners and one night stands in a very casual manner. What actually is these things? Some even doesn't know what is mean by virginity. Things are getting too westernized. I think nobody respects virginity... Love is a very different feel.. Love is great.. Love is pure.. All these things going around here is not love.. And I have intense dislike towards people who speaks about casual sex... I feel like killing them... And I feel all these people should be hanged till death, should be stoned till death or else should be beheaded in public.. All those people who engage in casual sex should be given the capital punishment... I feel this way... Please make me understand about this chapter... THANK YOU