Guaranteed flatline?

I'm 48 and married with a healthy sex life. We usually have sex every other day and I do PMO in between. There are rare occasions where I might PMO more than once but not often at all. I also made it a rule a long time ago to never watch porn unless I was masturbating with orgasm and I have tried not to turn it into a long session. There have been a few occasions through the years where I attributed ED to my habit but once I established my every other day pattern, it's very rare that I can't perform. It did happen recently and that's why I am here. I'm 8 days in no PMO but we are still having sex. It's actually the best feeling sex I can remember and I am completely focused on the sensations and not having to think about anything else. I'm not craving porn but I am craving sex everyday now although I am staying with my every other day routine.
All of that to ask my question, have a kept enough balance in my sex life to avoid a flatline?

 

Thanks for the reply.