Immortality..it's vastly overrated...
Everyone you know dying..sure, you can make new friends, but they die too..and the ones after that..and after that...
and sadnees and soroww over their loss will repeat itself over and over and over again.
In the end you won't want to make new friends as you realise you're going to watch them grow old and die while you linger.
We are mortal anda short-lived race, and that's how it's supposed to be. We aren't cut out for immortality.
I rember one sentance Tolkien wrote:
"Death was gift to man for Eru, a gift that one day even the powers themselves will envy."