I would like to know if it is a good idea to use reward points in exchange for TV
I think it's a personal choice. They're your points, so do with them as you choose. If your question is more about value, then I guess it would depend on the points needed to obtain the TV.
Some stuff worth reading on this topic before you buy:
I had and continue to have many points. I bought a sharp Aquos 42 in TV thru the rewards program, and they had a reduced points useage offer at the time which made it a good (not great) deal. Hope that helps. TV is great and I found the value to be reasonable.
I think it boils down to something that appreciates within your life - whether it's the enjoyment and entertainment you can get from a wide number of things you can do with a TV...or the experiences of travel. All personal opinion, of course. But, if a point equals a penny - the affinity value is mitigated by what's important to you. I'd use the points to go see what's out there. Travel.... But, that's just me. You can get a bang for your buck (points) with a cool TV too!
Retrieving data ...