Yall make some good points about different firearms and such.
I usually have 2 firearms (S&W 638 and Sig P320 Compact). I can carry both at the same time if I choose or just one or the other. I have other firearms I sometimes will swap the P320 with, but the longer I carry the P320 the more it just feels like it was made for my hand...
The S&W 638 Bodyguard I keep around because it's so easy to conceal. I can load it up with snake shot and hollow points. I can shoot it double action or single action (I usually shoot it double action.).
I live in a small town and sometimes walk downtown or to HEB. I also ride a recumbent trike at a park not too far from the house. The 638 is perfect for me for all these situations.
When I'm in my truck the firearm in addition to the 638 I carry will depend where I'm going. If I'm heading closer to the Mexican border then I will carry something that has higher ammo capacity and that sometimes includes a rifle.
I am a firm believer in quality over quantity. I've found a few firearms that I like and trust and can shoot accurately.
I have a few knives but there's only a couple I usually leave the house with because of their concealment and ease of deployment. I've trained in several martial arts styles yet I practice basics that are simple and effective. It's really not how many martial arts techniques you think you know, it's how many you can execute under duress.
Again, quality over quantity. At least for me...