We've had our (black) leather suite for 10 years. It still looks in excellent condition with no tears or flaking leather.
Apart from having the seat pans re-filled a couple of years ago when we moved it has had nothing else done to it.
To restore the shiny look I spray it every few months with Lord Sheraton Leather Cleaner.
I still remember the day we went to purchase it... husband and I walked into the shop dressed head to toe in leathers (we were on our motorbike I hasten to add). The young salesman who looked barely old enough to be allowed out without his mummy then spent 10 minutes trying to tell us how to look after leather and explain that leather was not the same as other material.
Did he not see what we were wearing? ?
Acute anxiety after death of my husband