re: How do you deal with the guilt of living far away from your aging parents?

Be intentional. Visit when you can and find reasons to. Call frequently.

Now that I'm a dad with a lot going on, I sometimes feel my dad thinks I don't need him anymore. Which is awful and I can now more easily think about how I'd feel w/ my boys. So include him, text him about the game and let him be one of your first calls for your life events, etc.

They're going to be sad either way, I think the goal is to make sure they know how important they are to you even as you have no choice but to make your own path. And they understand that's how it has to be.