Assuming that when the backlight dies, it's feasible and cost effective to do so, yes. A CRT TV itself is so much cheaper than an LCD that if you don't care about wall mounting or space or weight, it's worth a serious look.
Two 32" CRT HDTVs: $1000
One 32" LCD TV: $900 + ($300 - $600 backlight replacement)=$1300-1500
There are lots of reasons not to want a CRT HDTV, but lifespan isn't one of them. If LCD prices continue to fall considerably, it might become a more relevant factor in several years.