Is not cumming from a BJ a problem?

I've had my share of blowjobs over the years, most of them good. In fact, I can't remember ever getting a bad blowjob. It might not be my nr.1 turn-on, but God i love a mouth on my cock, with that said, things should be fine, over and done with, but... Once! Once I had a girl suck me until I came, and I'm talking from start to finnish here, no cheating with sex inbetween. I've had a few girls say things like "You haven't tryied me" or "I'm too good for you not to cum" but only one of them made it to the finnishline

I'm begining to come to terms with the fact that I don't cum ehen others go down on me, only problem is, I want to!

So, there is a good chence that it's all just in my head but ido want know if I'm yhe only one? Therefor, boys and girls, I want to ask you, have you ever come across this? Did you find a way to overcum the hurdle, and if so, care to share? ;)