So heres my take on the whole thing.
Trailers, in general, are expensive. They need maintenance, storage, cost more in fuel to get to/from where you're going, and not only that - they can be hard to get into and out of some areas. If you sit down and plot out how much its going to cost you monthly for that trailer and everything it entails, I find for a lot of people they're paying more over just getting a room... you've really gotta be using that trailer a LOT to make it break even... like we're talking more use than the average guy has PTO for.
I ended up settling(and I use that word lightly) for a wall tent. Heatable for the colder months, enough room to really stretch out in and honestly really really nice accommodations in the woods. It stuffs into a giant rubbermaid container so as long as my vehicle can get back there I can put it up and use it. No storage fees or maintenance crap - when not in use after drying it out it can sit in a very small area in my garage until its needed again. Not to mention the tent and stove cost significantly less than a trailer. I went with a 12x14 which, with the way I hunt(I typically leave camp in the morning, depending on the hunt I might return at lunch, but usually am out all day until dark) is perfect for me and two or even three other guys as I don't cook inside. Plenty of room for me, my wife and kid. If room is a concern, go ahead and order the 14x16 or a 16x20 or larger - you'll still be money ahead over a trailer.... even accounting for a cot and luxurious camp mattress(I run the therm-a-rest mondo kings).
edit - you can buy showers for a small fee at campgrounds or truck stops. If you must have access to one, buy a shower tent and one of those portable water heater setups. Still gonna be money ahead over a trailer.