Welcome suprastim,
For me M and O is too similar to PMO in terms what is happening in my brain and that's why i avoid both and only have O with the GF. For me this is necessary as i don't believe that my MO behaviour was very normal. Can anyone tell what normal MO is in here? I guess not with certainty.
Leaving both alone leads me more to the GF because this is the only way i can give my libido what it needs, which would be intimacy, tenderness and love.
One last thing, when i MO for times in two days and my GF wants intimacy on the second day i will not have real and upstanding libido which i then need. Too bad, and that all for MO? Not anymore, been there, done that.