If you ask any member of my family what kind of a parent I am, they would say that I'm a good Mom, but that I'm too paranoid and need to relax and not worry so much about my children getting hurt.
I would have to agree that I'm a little on the "too cautious" side. When my boys were little, I'd have to go inside when they'd play because I would see them riding their bikes down the hill and shout things like "OMG. SLOW DOWN! YOU COULD FALL OFF THAT THING AND END UP IN A WHEELCHAIR!" And Tony would tell me to leave them alone and let them have fun. It's not in my nature to be all "go ahead and climb trees, who cares if you fall and break a leg!" It's always been a struggle for me to watch my children play because I DO worry about them ending up in the ER with a life threatening injury.
In my defense, I have learned to put my (sometimes irrational) fears aside and let my children enjoy life. Even if everything in me is screaming "OMG YOU COULD DIE FROM DOING THAT!" I walk away and keep my mouth shut. I learned early on not to let MY issues interfere with their ability to enjoy their childhood, but that doesn't mean I don't freak out on occasion or that I put my foot down when I think the risks outweigh the fun that they think they'll have.
Yesterday, I was telling my sister a funny story about the night me and Gabby baked cookies.
"I told her that she couldn't eat the cookie dough, because it had raw egg in it..."
"Wait. You won't let Gabby eat cookie dough because it has raw egg in it?"
"No. I won't let her eat it."
"WHAT? Ok. I'm sorry, that's insane. I can't believe you won't let her eat cookie dough. I let my kids eat it all of the time."
"Well, I don't want her to get sick. I've watched the specials, I know raw egg can make you sick."
"Y... are you serious? She's not going to get sick from eating a little cookie dough. We used to eat it all of the time."
My brother in law chimed in and they both started laughing at me for being a little "crazy".
I have to admit, usually, when they tease me about being overprotective, I laugh it off because while I know that I do need to chill sometimes, I also know that it's my job to protect my children and I'll never apologize for not wanting them to get hurt. But until my sister made me feel like a jackass about not letting my children eat cookie dough, I never really thought that it was crazy of me to be all "OMG DON'T EAT THAT RAW EGG IS BAD. But! Raw egg IS bad.
Right?
I mean, um, like, you don't let your kids eat raw cookie dough, do you?
Or, do you?.

No...I do not and for the same reasons as you. I am also pretty overprotective, and the fact that my 6yr old son is my only child makes things a little worse. He is afraid to try a lot of things, and I have come to realize that it's unfortunately because of me. I'm always the parent that cautions my son against things because he might fall and get hurt, and now I see that it works against him because he's really afraid to fall and get hurt. Now I try to gently push him in the opposite direction and get him to try new things...so far it's not working so great, but I'll keep it up.