The Elder Scrolls Online wants crafting to be a major part of your experience in the game. The latest set of answers to community questions makes this very clear, outright stating that the vast majority of crafted gear is meant to be superior to found equipment. Yes, certain items from the world might have unique boosts that you can't craft, but even those items can be upgraded and improved by dedicated crafters.
Dedication is a key consideration: Since your pool of skill points is the same for both battle skills and crafting skills, choosing to advance your crafting abilities will potentially mean passing on more combat-oriented techniques. Other topics under discussion are the finding and use of style books as well as how set bonuses and crafted sets are designed in the game. Check out the full list of answers if you can't wait to make your mark in Tamriel by making things.