Cats and collars - should they have one?

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Bear with me I'm going to be posting here a lot I think!!! (new kitten!!)

My kitten is 15 weeks, he's had his vaccinations and is booked in to be neutered and micro-chipped in a fortnight.

THe burning question is - should I put a collar on him? He WILL be going outside (don't think I'll have a choice as he sits at the door meowing already!)

Are collars danger? I've a small on here, it's the quick release type, the bell on it seems to annoy the heck out of him (or more correctly he wants to catch the bell) but should he wear one so those without a microchip scanner (ie most people) know he's not a stray?

At the moment my car has on a glittery blue quick release collar with 2 bells on it. I put them on her so she can't kill the birds.

I do think they should wear one, just make sure it isn't too loose and is a quick release one.

Our cat however, does not think he should wear a collar and manages to get rid of them whenever he is out so we have given up hope he will ever wear one.