Should I keep my comics from the 1970's on?

[Green Lantern wannabe]

I have near mint condition (if not mint condition) of the Micronauts, including the first issue, as well as NM condition of Rom, including the first issue, and the Death of Captain Marvel, as well as the entire Crisis on Infinite Earths. I have over a hundred other comics, but I have almost never read them, except perhaps for the Last Days of the JSA, which is now outdated since they're back.

Should I sell them? If they're not going to appreciate very much, there may be no point in keeping them.

[Stellar]

In 20 years they'll probably be worth twice what they are now (or more). Depending on how old you are and if you need the money, you could determine whether to sell now or later. You win either way.

[Green Lantern wannabe]

They've beaten the interest rate offered by the banks, but I'm not sure I can live on several hundred dollars earned over twenty years, or even several thousand dollars. Still, if I did cash out, what would I do with the money? Put it in a bond and earn a lower rate of return?