it should be pointed out that from an outside perspective, a lot of our current reality could be seen as mystical, or adventuring. we've got pilots who command amazing steel winged beasts carrying people thousands of miles away; we've got cave divers who explore the deepest depths of the earth, discovering a still hidden world; we've got astronauts who defy gravity and literally leave the only planet we have.
in all probability, most of us would just be the joe shmoes of that world too. lets draw some parrallels, if not entirely unfair ones:
Mages=Scientists: do we all have the prowess and ability to study nature, and research the world on a deeper level? not really, so why would we have the ability the cast the equivilant magic?
Healing Mages=Doctors: yeah, doctors are looked up to in our society for a(n argueably) good reason, as their years spent studying the human body give them the ability to heal it in a way most aren't capable of. there's no reason to think that the percentage of healing mages would be any higher or that more people would be capable of that profession in this imaginary world
Adventurers: i couldn't really think of an equatable profession, since even in our world, we could be adventurers. but most of us don't for a good reason: lack of capital support. money. we could wander america if we wanted, helping anyone with their mundane tasks, but you'd have to already have a huge amount of money to pay for things along the way, and should expect to take a huge loss in the long run. and face it, if you're the kind of person who has that much money, either it was handed to you and you're kind of a spoiled douche, or you've worked so damn hard to get that kinda money that you're not gonna walk away from that income to blow it all helping mostly ungrateful people.
so yeah, most of our lives would be no different. AND...
our world is pretty magic, we've just become desensitized to it.