Yes, I've been to Thailand, and I would say that it is definitely well worth a visit.
Bangkok is rather busy and crowded, but there are some quite good sights to see there, such as various temples, which are very impressive. Ko San Road is where all the bargains are to be had, including some ridiculous ones, like they'll print you an academic certificate, (one friend of mine got a Ph D in Pest Control for her cat).
Chang Mai up in the north is very good - again lots of really beautiful temples.
Some of the islands are supposed to be terrific.
The only downside is that there is, I gather, a significant "sex industry" , which is evident from much of the newspaper ads, and you do occasionally run into obnoxious types who are there just for that reason.
But, for the most part, I would say a good proportion of the tourists are cheerful, back-packing types.