Seriously, this isn't a question that should be answered by random people on the internet.

If you feel strongly about not using leather, follow your convictions and look into other options. But don't go looking for others' approval because you want an excuse to do something that conflicts with your morals or lifestyle or whatever.

Do what's right for yourself because it makes you feel good, not because internet people tell you it should make you feel good. At the end of the day, you have to live with you and we could all give a **** about what you eat/what you sit on (hopefully two different things).

If you feel that strongly about vegetarianism, you probably won't go with a leather saddle. If you don't, that's cool too, but be honest with yourself.