Incursion, just curious, but other than the experience with your brother and his fiancee, what generated the interest in firearms ? Do you live in a bad area ? Are you physically inferior and an easy target ?
I don't carry and I'll give you my reasons why.
Even though I live in one of the roughest areas of L.A. (think the bank robbery a few years back), it is not necessary and nearly impossible for me to have a CCP. One, I am not an easy target. I know my neighborhood, I know where to stay away from, what groups of people to avoid, I am physically imposing, I am intermediate level Muay Thai, I "dress down", ect.. ect.. ect. What I worry about is "Brett", the tourist dipsh*t coming out of some Planet Hollywood sports bar feeling out of place, drunk, and looking for a fight. If Brett, who is unarmed attacks me, what am I to do ? I can't fight him with a gun on me, thats too risky. I HAVE too pull my gun. And lets say Brett thinks I'm bluffing him, and not detered by my firearm, attacks. Do I shoot him ? is getting punched the same as being in grave danger ? No. Hell no. I could really give a rat's ass whether Brett lives or dies, but I don't want to go to jail for the rest of my life because some drunk @sshole couldn't control himself. And yes I would go to jail and lose all my money.
So, if you have reason to believe you are an easy target and are at risk of being a potential victim to a mugging/rape/robbery ect., get a CCP, get a gun, train with it, and learn the laws.
If you're getting a gun because you are worried about getting you're ass kicked and want to feel tough (I don't think this is the case) think again. I know my explanation is all over the place, but I am trying to emphasize the responsiblity of owning a gun and why it is not simply a case of "have or have not". You have the power of death in your hands, just how critical is it that you need it ? Can you use restraint when you encounter the "Bretts" in life ?
When I bought my first gun I mulled over many of the same things you did. My reasons were : I enjoy shooting (about as Zen as it gets), I wanted protection from two legged and four legged creatures when I go camping/fishing, and in L.A. , it is the only real means of home defense (Rampart anyone ?).
Good Luck with your decision.