Chaosmancer
Legend
While that is true, it also greatly increases the complexity of the world, and it easily gets to a point where it threatens suspension of disbelief. We have enough of that with the dragons and the wizards, so there's no reason to add to that burden if we can easily avoid it.
If we imagine one sort of upbringing which leads to a character who can accurately be represented as a Devotion Paladin, then that's the minimum amount of lore complexity which is necessary to get those mechanics into the game. If we imagine an entirely different sort of upbringing, which nevertheless bring a character to the exact same mechanical representation, then that's... odd.
If you have a thousand different origin stories, and they somehow all funnel down to the same ten mechanical models, then something really weird is going on. You shouldn't be able to follow two different roads, and have them both end up in the same place.
I don't really think so.
Let us take something somewhat real world, an person sewing a wound closed. How did they learn to do this?
1) Well, the first answer is going to medical school. Simple enough.
2) But, they could also be a veteran, having done most of their medical training through the army. Similar training, but it is different.
3) Or, perhaps they went to veterinarian school. Sewing flesh closed is pretty similar between people and animals, so it would cover the same basics.
4) Or, perhaps they did not learn sewing because of medical school, perhaps they know how to sew from patching their clothing constantly.
5) Perhaps they were taught sewing as a way to bond with their grandmother, and it is a favorite past time
6) Perhaps they are a costume designer, and being good with needle and thread came from that job
7) Fishermen are good with hooks, needles, and thread, could easily translate into the type of sewing we are talking about.
The real world is complicated, and similiar skills can arise from vastly different experiences. And, in the game, a similiar skill is reflected by the exact same mechanics. Because you aren't going to have a different skills for every different way you can do something. So, having a dozen different interpretations of how you have your skills and what they mean does not make the world incoherent or remove suspension of disbelief. If anything, I find it makes the world more realistic and easier to believe in. There is never a single way of doing something, so people with different expeirences would naturally find different ways to accomplish the same goals.