An LBS near me loves to sell spoke wrenches. I asked why. He replied, "Becasue then I get to true a lot more wheels and replace a lot more spokes."
If you're still at the stage where you're wondering if it's normal for wheels to be out of true, you're probably not yet at the stage where you can true you own wheels.
Agreed. When my pet dog riding in my front basket tried to jump out unexpected, I crash and my rim became untrue. I bought two spoke wrench and tried trueing them for the first time. Two hours later after loosening all spoke from start and couple of strip nipples, I gave up. Went to LBS, $25 and one day later, they were perfectly true.