Our society often glamorizes this lifestyle in movies, television shows, and music videos.
The only reasons accepted by the norm for having intercourse are a) to express love to your partner, and b) to build a family.
Take those out of the equation and you may find yourself having a hard time justifying why you're having a strictly-sex relationship.
It’s fun and it’s convenient, and other than a pair of sexy undies, you don’t invest much into it. The topics of your communication will be predominantly when to hook up, what position is preferred and which toys or roles to try.
You basically get to have a no-holds-barred humpfest and go about your day afterwards without needing to check on your partner. Therefore, you cannot expect your “playmate” to start asking you what your favorite color is, what your hopes and dreams are or how many kids you want to have, nor should you ask these questions.