Yeah, just don't travel in rush hour. If I had the choice I'd pick Austin, but the traffic's bad there, too, because the highway wasn't built for the population it now has.
Lots of decent beaches about 50 miles away from Houston. Kemah, in particular (my sister lives near there). Great if you like to sail or fish, too.
Plenty of very nice historical houses to visit and every year there are numerous Parade of Homes to visit.
Galveston unfortunately had a very bad hurricane back in 1900 that killed thousands. It used to be a HUGE gambling mecca, full of holiday homes of the rich. It was at the height of the holiday season that shrimp/prawn and other fisherman began to come and tell of a large storm at sea (this was before the seawall was built). No one wanted to quit partying, so there was no evac (the island is attached by a big causeway).
But what houses survived are a real marvel of Victorian architecture.
The service in most places is exceptional compared to what you get here. Seriously, I always forget and am surprised by that when I go back to Texas. And the terrific food. Oh, such food! Free refills on non-alcholic drinks.
Houston is extraordinarily multi-cultural. There's just nothing you can't find or that someone won't be willing to source for you. You can find most No. 7 products in Target cheaper than you pay for them here. 
It's never too much trouble to source stuff, or ask others to do so. There are large communities of just about any race, creed, orientation.
Both cities are truly 24-hour places. It's easy to forget, just how convenient life can be.
When hosted it's expected for guests to make themselves at home and pitch in as such, across cultures, unless instructed otherwise. But just say! You don't have to keep anything to yourself there! 'Sorry, I'm not sure how it's done here, just let me know' is all that's needed.
It's not without its drawbacks, no place is. It's very different from here, and not all of those ways are good, of course.
But for a couple or a few years IMO it's worth it. Plus, the taxes are very very low there. It's a good opportunity to save some money and put it towards pensions.