Tsk, tsk, tsk...
People, it matters, to whom it matters to. Get it? That is, not everyone likes the same thing.
Examples...
One guy that I blew, had a BIG head, and so never fucked (said any hole was too tight, and hurt HIM, and worried about hurting the receiver too). His head was HUGE, while his dick was THICK, but just average in length. It was a LOT of fun to suck, but I can see how insertion might have been quite a task.
Another guy, had quite a narrow head. For sucking... not that exciting when focusing on the head, but the narrow shape (on a long shaft), slipped itself right down into my throat.
Their heads were VERY different, but each led to amazing times, in their own ways. There are no hard, fast, rules for anything related to sexuality. Not size, not shape, not anything.
There is black, and there is white, but in between, there are infinately undefinable shades of grey. That's sexuality.
Make whatever kind of cockhead you DO have, work for you. There's definitely someone out there that thinks it's absolutely perfect, whatever type it is.