Dr. Harry said:
My chioce in campaign flavor right now is that there should be options than just more and more undead. Why make life too easy for the PC's?

After all, the undead "heavy sacrifices" come with little flags to tell the players "I'm Evil (pronounced eeeee-vil)! Kill me for the XP!"
I voted "Yes". Fantasy literature (and even the RPG) is full of examples of characters trying to cheat death by remaining eternally young. Fistandantilus, the Seven Sisters, Elminster, and plenty of others in the game have found ways to extend their lives, without becoming Liches.
The Midnight setting describes, in the fluff, several instances of NPCs, both good and bad, artificially extending their lifespans.
The book "The Complete Guide to Fey" by Goodman Games references an alternate means of achieving eternal life, referring to spellcasters who use a spell or ritual to become Fey, rather than becoming Undead. Being a satyr, dryad, or pixie would be much better than being a walking corpse.
The Witch's handbook, by Green Ronin, also has the potion of longevity, reintroduced.
The Black Company Campaign Setting and True Sorcery both have the "Defy Time" feat, which allows a spellcaster to slow their aging, and eventually stop it. It would have to be reworked to function in a game with regular sorcerers and wizards.
My last campaign ran over about 8 years of campaign time, so human characters who started the game in their mid-20's are now facing the prospect of entering middle age. I think the aging rules and the desire to extend aging becomes more important when things like training time and downtime are taken into account.
Banshee