I think you can never get bored living on the ocean.
For those that never have, it is a wonderful experience.
Beach towns like Ao Nang, Krabi and Patong, all offer lots of things to see each day.
Plenty of cool shops, activities and places to eat.
The downside is if you are on a budget, every single thing cost more.
Rent is much more, utilities more, groceries more, alcohol, restaurants, you name it.
Attractions are all the same prices as in the west, so expect to spend anywhere from US $35 to $45 for 1 day at a major water park. $35 =~1200 thb so you can burn your budget quite quickly going to the major attractions.
However, if you can swing the budget it is a great way to settle down in your golden years and not get bored.
The allure of walking on the beach every single day is really something to look forward to.