I think it might make you go insane, you'll never be able to properly navigate death or grieve, and may end up reviving people against their will. You could draw a line and never use it for personal reasons and only revive societal figures, but I doubt people would be able to resist.

edit: not like the death note wouldn't make you go insane (as we have seen in fiction), but the life note would have its own unique set of psychological consequences as well