Will a front crown made of zirconia last a lifetime as long as it doesn't affect my bite and I take care of it?

The crowns are not for all your life because during the time it chances, if you take care of it and have a good hygienic the crown can last longer. 

If you get good care of your crown and good dental hygiene and check your zirconia crown at the dentist can have a durability of 15 to 20 years. The margin of the gum may change and the crown may also tend to wear out. That's why its durability is not for life.