Cnidarians don't "get older". The physically don't age. Theoretically, they can live "forever" in the ocean, but it's just not likely. They usually die off in less than 100 years due to some outside natural cause.
I agree however, that some people who get anemones just aren't ready for them, and it's sad that they do die. They are very easy to propagate though, if the correct time and patience and work is put into it. Some anemones will bud on their own, and some can be fragged to grow into 2 new anemones.
Just my thoughts. There are many places that sell only aquacultured corals and anemones. I know Drs. Foster and Smith Website (www.liveaquaria.com
) just opened a new coral aquaculture center. They might be worth checking out. 8)
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