As a reply to your title: not necessarily. I've seen plenty of vids where circumcised guys cum too quickly, and if you research a little, you'll find it's a common problem, even if you are circumcised. This is why I don't think the problem stems from just having a foreskin; it's probably something more fundamental.
I would research and pursue alternative methods (spend some time on google, consult your doctor) before you consider something as drastic as surgery. I'm of the opinion you should only think of circumcision if all other methods have proven to be unsuccessful. It's definitely not guaranteed you will in fact last longer and I've heard recovering from adult circumcision is a real bitch.
You also mentioned hygiene, which I consider to be a non-issue. As long you bathe regularly, you have nothing to worry about. If you are worried at all, a quick rinse in the sink before any sexual activity will allay all fears.
Good luck, and hopefully the responses here help you.