>>29294713
Tease and denial is a big turn-on for some. Chastity supercharges that. It opens up a bunch of new, cool ways for your top to bully you (or to bully yourself if solo). You can spend hours reveling in your helplessness, watching the roughest, nastiest porn out there, touching yourself everywhere but down there, feeling your cock struggling with all its might to get hard, fighting in vain against the cage.
Being aroused is a deep, powerful feeling, and orgasms are an interruption to it. Tease and denial, and by extension, chastity, allow you to stay aroused for long periods, riding with the rising and falling tides of your sexual desire, your body tingling with the sheer *need*. Any orgasm after such a build-up is a toe-curling beast.
It's all very individual of course. There are other reasons to wear a cage, or to not wear one. I recommend anyone with any bottom tendencies to at least give tease and denial a try to see they might get something out of it.