I do get the ez-up confusion...I resisted getting the ez-up when we got our TD. So over the tent deal. If I were camping alone, I'd do without the ez-up, for sure. I'd have a cute beach umbrella or lightweight patio umbrella over the TD side door with just enough room for my chair, and call it a setup.
With the two of us, it's no big deal setting up the ez-up. Still would rather do that than set up a tent, all day long. I'm not a sun worshiper...I need woods and shade. When camping in a park that we're not familiar with, it's nice to know we have our shade ready to go if and when we need it. We don't always set up the ez-up, but it's peace of mind to have it with us. We don't use it to protect our TD...sometimes it's over the TD, and sometimes it's not, depending on the site configuration.
To each his own. For one person, I don't blame anyone a bit for not wanting to bother. Besides, an umbrella is so CUTE with a teardrop.

Also, I just had a piece of dense foam cut to fit for our mattress. Got it from a dude on ebay who calls his shop 'isellfoam'.
We got 5" thick, and are very happy with it. No bottoming out, and very comfy. Squishes through the door just fine.