Won't Stop Pleasuring Himself

My husband and I have been married for 10 years. When we first got married we had sex multiple times a day. But in these last few years it has calmed down to just once. I think this is beyond normal, given the fact that we are busy with work and kids. But he acts desperate and deprived. He asked if he could profanity in his free time (times I am unavailable). I told him I didn’t care. And that just unleashed a monster. He won’t stop! I have caught him masturbating up to 5 or 6 times a day. And we are still having sex! Our sex is also very adventurous (aggressive, whips, etc… which mutually excites us) so the fact that he has the energy is beyond me. He spends an hour in the bathroom while I cook dinner. He takes that long in the shower getting ready for work. I caught him in the car in the garage, and finally, and this is the last straw he slipped to the bathroom at my uncle’s house. I try to give him the benefit of the doubt that he might actually be using the bathroom, but when I ran up there I hear his ‘usual noises.’ I went in and asked him to control himself and he was just begging me to have sex with him. The sad thing was we were there for a wake! I enjoy the fact that he is really sexual. And I feel that I benefit from it- he shows no interest in being with another person, but I get the sense that he just wants constant stimulation. I’ve also watched him do it- and some time it can get really creepy – like he’ll try and choke himself at the same time or he’ll put a rubber band around the head. Once I caught him sticking a plunger up his rear while doing it. I don’t want to stifle him, but I know this is unusual and I’m not sure whether to be impressed or upset.