well, I have to admit; as long as you stick to easy to keep hardy species this is the easiest pet hobby in the world
it takes up very little space, you can put the cages on bookshelves since they weigh little and most of the interior is free; sand, turf, leaves and dead wood are all from outside.
hitchhiking bedbugs, woodlice, earwigs and other wildlife are quickly eaten.....
the only thing that's even easier is my roach collection; and of course these supply all the food for my spiders and scorps.
I do have 2 groups of communal spiders, but these are still very small.
once they're getting bigger this is a bit more tricky. a Hadrurus sting is painful but not very dangerous (I don't handle them, mind!), but the bite from Poecilotheria or my other communal creepy Hysterocrates gigas is not to be trifled with.
I do handle some tarantula's on occasion because of my job teaching biology to the kids. my huge Grammostola pulchra and my Chilean Rosea are "tame", sort of and sometimes kids want to experience a big hairy spider on their hand. (or a snake for wich I breed Prairie Gartersnakes, the 5 adults I have are very docile)
friend of mine got bitten by an adult Hysterocrates and that put him on medication for more than a month. they are far more agressive and toxic than the hairkickers from the new world.