I never used to eat mine. But then one day I sucked another man because I wanted to experience a hard cock in my mouth. When he came I swallowed it and discovered the pleasure of getting another man off. Then some years later I was like, "If I can swallow someone elses cum, why not mine ?". I look back and thought of all those wasted loads from jerking off. Never again.
I have eaten my own cum since the first time I jerked off to ejaculation. I thought that was what I was supposed to do. I still eat my own cum and always swallow when I suck cock. That's what cocksuckers are supposed to do.