We (especially my wife) are too old to sleep on the ground. We did the tent camping for a long long time. My wife has had several back surgerys and a neck surgery... she gets a little grumpy if she sleeps on the ground now.
I looked around at tent trailers for a long time. Only found a few that I really cared for. Knowing how much we would actually use one, I really didn't want to pay the price they are asking for a new one ($4500 and up!).
I finally bought one of these used

It is pretty light (probably under 300 lbs loaded) and pulls pretty good. It is probably one of the smallest and lowest profile of any of the motorcycle tent trailers - and then one of the biggest when set up (queen size bed area and a huge dressing area) I think the thing I like most about it is that when it is set up, everything is up off the ground - pretty nice if it rains.
Drawbacks: This trailer doesn't have as much cargo room when folded down. It has some, but not as much as some of the other trailers. It does have a nice rack on top so you can pack stuff on top, if need be - and the rack folds down if you don't need it.
One problem with all tent trailers (and tents) is climate control. We actually have a small airconditioner for ours, but seldom use it because adds weight and takes up some of the storage room. Pretty easy to carry small heaters and fans.
We only use our tent trailer about 3 or 4 times a year - and that is usually at rallies. We have a 37ft fifth-wheel toy-hauler, but some of the rallies we attend don't have good places to park RVs or they want to charge way too much for RV parking (some as much as $50 per day).
If we are just out on a riding trip, we stay in motels. We can pack lighter if we are staying in motels and it is pretty nice to have a climate controlled room with a nice hot shower. And, you can pay for a lot of motel rooms for what some of the tent trailers will cost you.
Don't get me wrong, we enjoy our tent trailer... it's great for those situations when we need it. And if I didn't have one now, I would probably be on the lookout for another good used one

Here is a link for the TimeOut Trailers:
http://timeouttrailers.org/campingtrailers.aspxRoll-A-Home is another brand that I considered:
http://www.rollahome.com/