I have re read the OP twice.
He said he has ONE "objection".
That is his wife travelling to seminars several times a year.
He explained his objection fully and asked if any others felt the same way.
In doing do he has been labeled as some kind of selfish, idiotic, self centered control freak while in reality he only has concerns for his wife's safety because he clearly loves her and has concerns.
All the replies needed to say were on the lines of "you are over reacting, she'll be OK" or " don't worry mate, she'll be fine" or " although traffic and driving is really <deleted> in Thailand, %%% show it's not so bad". Even though, just like winning the lottery, however low the %%% might be, it has to happen to someone.
It's no wonder forums are losing their appeal when it comes to asking advice.