Life with a trailer is my life. Having a trailer has never been a hindrance to me.
I started with a 6x12 and used it from 2010 through last year when I sold it. I sometimes kick myself for selling it. I sold it because it wasn't big enough for the uses I put it through outside of camping. I use it for other things, and the size was starting to test my patience.
It never was a problem. Prior to selling it, I took it on most all of my trips. The only times I didn't take it was when I went to AM Solar to get my solar installed in 2010 and a few trips when I took my mobile garage (8.5' x 20') with my Jeep in it, or multiple motorcycles.
The only trip I have ever taken without a trailer was to AM Solar. I have been doing the truck camper thing since 2010. Truck has 40k miles on it now, and a high percentage of them are with the camper on board.
Two words describe towing a trailer: Adapt & overcome. It will only be a nuisance if you let it be.
I have never had a problem getting fuel.
7x14 is an ideal size. If the wheels / fenders are totally outside the trailer box, it will be nearly just as wide as the camper, which means you can see it out of both mirrors while backing up.
My 6x12 had a track width narrower than the camper. If I was trying to back up in a straight line, I couldn't see the trailer until it was crooked.
6x12 didn't give much room for gear in front of the motorcycle(s) I hauled.
I want to get either a 7x12 or 7x14 to replace the 6x12 I had, but I'm not in a big rush to do it.
The 6x12:
The 8.5 x 20, which I still have. I scored this beauty from Craigslist and made a 600 mile road trip each way to get it.
The 6x12 was my motorcycle and gear hauler when camping. I carry things like lawn chair, patio rug, generator and gas, and other misc camping stuff.
I sold the 6x12 about 2 weeks before my big motorcycle adventures last year, so I used the 8.5 x 20. It's huge and doesn't have a lot of ground clearance when going in and out of driveways off city streets, but who wants to tow such a behemoth on city streets anyway?
One thing I will highly recommend to anyone looking at getting a trailer, and you may have to special order it to get this feature, is get one with a tongue at least 48" long.
Dealers that don't have a clue will order all their trailers with a standard 36" tongue, and that short of a tongue isn't conducive to most truck camper uses. the camper will likely hit the front of the trailer in a sharp turn. You can adapt to the problem and get a longer SuperTruss extension though.
When I bought my big trailer, I thought I'd need a longer SuperTruss, so I ordered one, then discovered I was OK with my short one.
Do I like having a trailer? YES!!
It gives me extra storage space for gear, even if I don't haul a motorcycle.