Living with my Bernese and DPs Leonberger. Have had OES, wolfhound and Newfie.
Bad bits - hefty insurance premiums, bathing, transporting, people intimidated by them, fur carpets, shorter life expectancy, suffocating cuddles, can knock over any attempts at Christmas tree protection, children used as skittles, need to be careful of slow growing big bones and joints. Snoring. Risk of bloat.
Good bits - cuddly big bears, my last Bernese made it to 12 without any health issues, current Leo is 9, don't need huge amounts of exercise, can curl up small when it suits them, don't eat excessively if good quality food, feel safe when out and about with them (even though I know it's just an illusion, others don't !), tend to be good with children, can't live without them. Tiny poos. Strangers now go out of their way to talk to me. No longer need a hot water bottle.
There's something special about all dogs but I'm a sucker for the gentle giant type.