Don't know what "deserves" means in this context. If there's a species that doesn't "deserve" to be preserved, it's homo sapiens, but even for us humans I'm not sure what "deserves" means.

Once upon a time, after having to deal with mold in the house, I said to a friend that I didn't understand why, having done its evolutionary shtick, mold didn't just disappear entirely. Seemed to me that it didn't deserve to continue in existence. And my friend then wondered aloud what we'd do without blue cheeses. Well that changed my mind in a hurry!
MACTECH ubi dolor ibi digitus