This would be for personal protection at home.
I see from your profile that you're in Florida. We have some of the least restrictive CCW laws and I would recommend you get your license if you haven't already.
My wife and I both did, and she how has a S&W .38 airweight and I have a Clock 19. We also have a 12 gauge pump for those special occasions. After Katrina, and given how many storms FL mostly dodged, we felt some personal security was in order.
I carry a Keltec .380 all the time now. Easily fits in my jeans or shorts pocket.
You'll probably get a lot of shotgun recommendations here too.
Why a revolver instead of semi-automatic?
A semi-auto is easier to fire and reload for most folks. Most of the major manufacturers also offer models with integral rails so you can attach a light. Whatever, you purchase, I would also recommend night sights so you can see your sights at night.