As someone who is 6' 3" paying more for economy premium absolutely makes sense. I get that others might not see the value but I enjoy not having my knees smashed. You also get off the plane faster which can matter for connections.

Get an airline credit card for one based in your city and checked bags are no longer a cost. Aside from a few minutes to drop and pick up. Usually there are other perks like food and beverage discounts on the plane, etc. I fly to the Caribbean once a year on the miles we accumulate.

Yep, I'm also 6' 3" and on the heavy side. I don't fly often so I find the knee room tax to be very worth it.