I dunno that Voldemort was actually that afraid of death in the first place; I mean, on one hand he was so super-paranoid that he went ahead and created seven Horcruxes instead of the standard-issue one, but on the other hand he wasn't afraid to basically experiment on his own soul by going overboard like that.
Plus, like, if you're sociopathic enough that you don't consider "cold-blooded murder to shave off a piece of your soul to stick in a jar" the kind of cost that's not a mortal sin, instead just, like, a logistical hassle to arrange, why not create a Horcrux?
Plus if his greatest fear was dying he probably wouldn't have gone and started a war. Probably he would have become some kind of evil sage or hermit or whatever, not pick the kind of job where he's definitely going to be hunted by cops and vigilantes all the time.
He's more like a control freak; his mom dying on him fed that with abandonment issues, he anchored his soul so he couldn't die outside his own choosing, he was afraid of losing to Dumbledore not getting killed by him as such, he hated that a prophecy would dictate his future, he couldn't get the job he wanted so he decided to conquer the nation so he could make the rules.
Voldemort always seemed to me someone driven by his need to dominate his surroundings, if he was really driven by death-fear I think he would have been more, well, cowardly about risking his life; he wouldn't have created a Horcrux without making someone else do it first to check it was safe, ditto his new-body ritual. Instead he was basically a tyrant. And he probably would have went and stolen / reproduced the Philosopher's Stone way back in his youth to preserve himself, rather than just trying to grab it the one time he needed to rebuild his body and not bothering with it otherwise.