10,000 does seem very low. Definitely not any lower than will allow you to get to your nearest suitable airport with reserve if you have decided that you will divert there. Remember, in the very unlikey event that you depressurize at 14,000 or some higher altitude, you can get down to 10,000 very quickly.
Some operators in the event of a depressurization will descend to 14,000 initially, set long range cruise and then when confident that a destination can be made at 10,000, will descend to that altitude.