Hookup sex has its drawbacks, as in her pussy might not be as fresh and a turnon as I hoped to where I wouldn't even want to insert my fingers in there. That's happened to me, but if we're talking ideal situations, then relationship sex is better. You know each others likes and want to satisfy your gf/bf. Hookup sex can be hot as in 2 or more horny people fucking each others brains out, but usually it's your own satisfactions you want to get out of it, as opposed to truly wanting to please your partner/partners because you love them. I get a lot of satisfaction pleasing others sexually and seeing them shake from big orgasms, so I take an interest in my hookup sex girls' pleasure, yet at times was just interested in my own.