Why do I cry at the drop of a hat?

[LuckyCharms]

2. Several possible reasons.

Undiagnosed depression, trauma, medical condition, etc. Also, has it always been like this, or is it sudden?

It could just be that you feel things. You're empathetic.

I think it would be a better world if people were not afraid to cry.

If you view it as a problem though, try consciously changing your facial expression, while pressing your tongue against the roof of your mouth. This will distract you momentarily and may stop the tears from starting.

Edit to add: I'm sorry. i just reread your post, and I see that you stated that this has been going on for a long time. If that is the case, I really would not be too concerned. It's the way you are, and it's not a bad thing, it's a good thing.