Hi Satti, I have to disagree with you. Sex can be very meaningful regardless of who the partner is, as long as there is mutual respect and appreciation. Also, many married couples can have un-meaningful sex for years without realizing it.
The decision who to have sex with is influenced by our cultural background, personal preference, and hopefully our wise judgement.
I understand that in your cultural background there is a strong emphasis on only having sex with one’s husband, but this is far from being a universal truth, and in other cultures people have other options that work perfectly well for them.