(1) No sex partner, so it's masturbation for me.
(2) My back and neck hurt the following day often.
(3) Probably an addict. I sometimes waste hours. I often feel more alive while masturbating, but I am addicted I think. Partly it is an escape.
(4) Acetylcholine seems to be a huge factor in my depression, and this seems to be related to sexual behavior too. I wonder if my sexual addiction over many years has created the acetylcholine imbalances.

I thought I had low libido, but apparently it is all in my head. I feel no enthusiasm for masturbation. I have noticed that feelings of sexual frustration coincide with feelings of depression and just blanking-out all the time. I am almost 50, so it isn't that hard to say "no" to sex now. (When I was younger it seemed impossible.)

A couple of weeks ago, I masturbated and looked at porn for several hours over a couple of days, and realized that I am still capable of that addictive and excessive behavior. I also had an excellent realization about the meaning of my life a couple of days following. That realization, explains a lot of anger and bitterness I have felt, and it seemed to go away. So that was good.

So I don't know if I should try to be celibate or try to have more sex. I have never felt comfortable with sex of any kind, but I suspect I would qualify as an addict. I have never had as much sex as most people. I'm just confused and tired.