No, it’s not. It encourages the “I’ll never be big enough” attitude and the “average penis size isn’t enough to satisfy a woman” bullshit that is all too prevalent around here.
At your size, I wouldn’t consider PE for any reason beyond trying to improve EQ. If a woman has an issue with that size(which I’d venture to say, few, if any, would) then it would be their problem.
I swear, the longer I’m on here, the more I realize that many of us have body dysmorphic disorder and other psychological issues(myself included).
You need to consider why you are heading down the PE path and if it’s something a woman has said to you in the past or an obession, I’d go see a therapist instead. PE will never cure you of that torment. On the other hand, if you’re doing it for yourself, for self improvement, or a hobby, then take all the precautions and be safe.