My perspective...
I have one handgun I carry for protection. I have two AR-15 rifles I used on duty, along with a tactical 12gauge shotgun. I have a really old 4-10 shotgun that my dad used when he was a kid in the 60's. I have two 30+ year old .22 stock fed rifles; those were my parents hunting rifles from a long time ago.
I always have my handgun with me. All the other guns are locked in a safe, in a closet, and probably used a few times in the past five years.
The only thought I've had about owning more, is to collect something that is rare, or a limited production release. Never did get anything though.