married 39n years, he cheated, with so many women, did not know about his fetishes

Hope to keep this short. 12 years ago he had a heart attack, so our sex life put on hold, never returned only occasionally. I bought a new phone to upgrade, his broke, he used my new phone for two weeks. I finally got around to changing my phone to the new one. He did not clear his data...well I got it all. Early one day in May of this year it took me 24 hours to go through all 173 women, found 4 long term relationships was still in them when I got my phone, 45 women he used for sex on a regular basis. The rest of the 173 sex talk. He was on multiple dating sites, multiple bondage sites, he attended sex parties regularly. He had his own toy tool kits, 4 suit cases full of sex toys that went on the road with him. Our marriage never had a reason to question his where abouts, he was an advent race car guy followed the circuit, was on a pit crew. I work full time as a manager a bit of hours a week. He is a truck driver but not full time. I have spoken with several of the women, they knew about each other and knew there were many as he I find out was a master in bdsm and had many slaves, he never told them he was married. Still hard for me to even say these words. I confronted him finally after I had all that I needed to know. I even joined his bdsm sites, dating sites, and sent him messages to let him know I now knew. His reaction, shocked, sat on the edge of his seat, admitted up to all, knew I had a tough decision to make if I would leave or stay. He told me if I stayed he would completely leave that other world and spend the rest of his life making amends. That he was ready to leave it as he no longer wanted it. If I left he would help me set up to live a good life, but he said he would not be going back to that life style even if I were gone. Said he was still in love with me deeply and he would have never done this if he thought it would have hurt me this much. Said he thought about himself only, his needs, he pushed me from his thoughts during his other life. He removed these women from his life...how do I know...they tell me...they are actually extremely upset he done this. Some want revenge to this day. Now he told me one lady whom lives many miles away, he had her for sex, until she could no longer perform because of health, but he likes her for companionship...lol...yup..but ended it. I have checked his phone, computer, and so many contacts, pictures, events, are all gone. For how long...I do not know. Did I stay, yes on the condition I cannot handle it no more. Do I trust him...never, long time but never. Do I love him, yes but not the same now. Do I want a life with him, still up in the air. I have been told he will never stop, only for a while, he is good at lying, deceit, hiding everything including his real emotions, now I find this out. Like I said I have never had a reason to question him and his actions, but he deceived me so much I am at a loss. I am told to walk away by everyone, not to stay, his loss. What would you guys do?????

Actions speak louder than words.

He lied constantly and serial cheated for years. Why would he stop Now?
Just because he got caught? His shame is temporary. He says whatever he has to say to maintain the status quo.

Cut your losses and start a new life without this abuse and neglect. You (and all) deserve better. You’re not into BDSM and fetishism and he’s addicted to it. That won’ t change and shouldn’t.