Apart from when I was under 15 I always rode bikes with drop bars.
Then I was looking for a bike to use locally and for trips using the canal here and was given a cheapish mtb as a present. (Promptly slicked it and added a rack and mudguard substitutes).
I also bought a new tourer (OK secondhand), with drop bars, soon after that.
The flat bar bike is fine for round town, and having flat bars makes parking easier, and getting in and around parked cars and the like easier too. Any distance and I start having issues with numbness and discomfort in my hands. On the canal I can deal with it by riding one-handed most of the way but don't like doing that on roads.
The drop bar tourer is the one I use for days out or longer rides. The bars offer variable hand positioning so greater comfort, and I find that control is better especially at higher speeds. I also find I get better maneuverability and balance, but suspect that's more down to the frame geometry than the bars.
OTH's comment about gears doesn't make sense. You can change the gearing on any bike to suit your needs. I have the same at the bottom on both bikes and lower on the tourer at the top (by accident not design). You just change the cassette &/or chainset and the rear derailleur arm if necessary.
I can't see any reason why anyone should have any real problems with either type of bars, it's just a matter of personal preference, and probably taste. Drop bars do offer the option of getting down into a lower position with less wind resistance and a bit more power going uphill, but most riders including me don't do that very often and can manage without. Flat bars, even with bar ends, mean easier access to brakes and shifters, useful in town but it doesn't make too much difference.
Just go with whichever you fancy!