Hi Adam, welcome to the forum. You mentioned 3 good points about enjoying a teardrop trailer. But there are more, many more. First of all, when you pull into a supermarket parking lot or a gas station, few people will come over and tell you what a beautiful little pop-up trailer you have. I find that sharing teardrop info with strangers, always brings a smile to my new friend's faces and strangely enough, a few times I have meet those same faces at one of our teardrop gatherings, with stories about how they found their perfect TD, or actually built one. How exciting is that?
If you check with some of the pop-up trailer owners they may fail to tell you how much time consuming it is to pack them for a camping trip. Also they are much heavier than a TD, plus there is the increased danger of water leaks when it is raining in the campground. Then, if they fail to set it all up again after they get home to dry it out, there is a great possibility that mold will form and the canvas and stitching will rot in time. I've met a number of folks who have shared that point with me. You will find that teardroppers spend most of their time outside of their rigs, cooking in the galley, and sharing the high points of their pride and joy. Wandering around a teardop gathering and admiring the many home-builts or restorations, makes instant friends, and who doesn't need more friends.
We all have different ideas about what a great time can be had in the "perfect camping trailer". To each his own, but I would like to encourage you to go ahead and build your own, believe me, it will change your life, plus open to door to attending wonderful TD gatherings and making a bunch of one-of-a-kind friends. Having never owned a pop up, I guess I am a bit partial to TDs, and I am sure the pop-up folks love their rigs, but may not use them as much as TDers do.

Roly.....Just my 2 cents. Remember, we are here to help, so just keep asking questions and we will answer them. (Some pop-up owners may respond differently, we'll see)