....Or you can learn enchanting and make a necklace and armor that gives you a lot more than 50% regeneration. Honestly, most of the armor perks are unnessary. Enchanting gives you the freedom of turning anything into something amazing and the freedom of wearing whatever you feel like wearing.
The problem with that, is there are far more useful enchantments than you can possibly fit onto your equipment - skill enhancements, resistances, regen, etc. You can pile your favorites on every possible piece and still wish you had more of some, and also still have skipped half a dozen "useful" enchantments. Those are the effects you want to pick up from perks if possible. For many character types, +stamina regen is one of those.
Edit:
In combat regen.... Yea... about that.
It's not useful. It's only useful for out of combat regen.
For an archer? It's definitely useful. There are many times in combat where you can go without using stamina for maybe fifteen to twenty seconds, just long enough to regenerate your stamina if you have some bonus regen.