Also another thing that people doesn't understand about immortality
Of course you're immortal
But you can feel every pain
Yes being immortal sounds cool but imagine taking a bullet in the head and feeling it go through your skull
The unbearable pain
Or as in this situation space
Sending the snail in space would be useless as anytime he could get sent back by some randomness just like that
And if YOU go to space it wouldn't be better because even tho you'll be immortal you can't breath in space so again, unbearable eternal pain after running out of oxygen