While I agree with some here, that not all folks share the passion for tools, I do think that everyone, home owners and renters alike, should have a basic toolkit - Pliers, hammer, screwdriver, etc. Theres way to many tiny, simple things that come up where a basic toolkit is handy. Not saying that everyone needs to be able to build their own house, but tightening a hinge, hanging a picture, etc.
I work in the marine industry, boat electrical. Most of the 12v stuff is extremely basic, I would be wiling to bet everyone on this site could do it. I think all the time when sending someone an invoice its a lot of money, but they don't own the tools, have the knowledge, the desire, or the care to do it. They'd rather call me when their pump isn't working, or their electronics wont turn on, of their battery is dead, or toilets not flushing. I am always happy to collect the check in the end.
My brothers are very different than me, neither of them have much interest in tools or fixing things, and thats OK, they both have their own hobbies. I have always been one to try and DIY as much as I can, have a full woodshop (nicely equipped) and a good amount of hand tools. That said, I won't work on cars, that stuff *****. I gladly take the vehicles to a mechanic, and happily pay the price.