a bee allergy is certainly no fun and shouldn't be taken lightly, that's why i recommened you getting an emergency kit. i keep one handy all the time when i'm working at the hives, even though i'm not allergic myself. just in case.
i got into beekeeping kinda out of neccessity when the old beekeeper from whom i used to get honey (for making mead) died a couple years ago. i didn't want to buy honey with questionable heritage and quality off supermarkets or wholesalers and didn't knew other beekeepers who'd sell me a couple small buckets for a decent price. however, i was sort of fascinated by beekeeping since my grandpa's best pal, who operated an apiary (unfortunately sort of a rare sight nowadays), sort of introduced me to it when i was a little boy. compared to 'regular' farming i knew from home e.g. chicken, rabbits, sheep, goats etc. the old dude working with bees in a little hut in the forest appeared almost magical to me, however, i didn't got into beekeeping myself until that incident for some reason assburgerdom and procrastination,
>Looking into why people keep bees
from your list 4, 2 and 1 (in this order) apply to me. earning a living with beekeeping is quite difficult, there are actually only very few full-time beekeepers in germany (about 70 throughout the whole country iirc). they have to deal with huge costs, huge amount of hives, huge amount of maintaining work, need to travel a lot with their bees and need to employ cheap labour from poland or czechia because importers, wholesalers and retailers pay ridiculously little sums to local beekeepers for 1kg honey, so they can sell to supermarkets and still make profit. i sell my honey and other products mostly to friends and neighbours privately and occasionally on village fairs and christmas markets. it helps to pay bills a bit. it's a nice hobby though and i enjoy being in nature, watching how young bee organisms develop to full strength over the year etc.
>I was surprised to learn some people can keep bees in cities,
it became a thing here among city hipsters recently, too. 1 hive doesn't take up much space. however, i look down on these people tbh. in nature, bees dwell inside forests, next to fields with lots of pollen and nectar. they don't belong into an environment composed of concrete blocks and all sorts of irritating emmissions which is crammed with large amounts of humans, large amounts of waste etc.