Mount system

what are mount system?
what are even mount use for?

some people use mount because they find it slow for them to walk on foot so their decision is to get a nmount to speed up their speed.
few month ago, when mount die, its' life expentancy wont decrease,unless the owner forget to feed the mount with feed and lead to dying of mount.
because of this new system i have lost my level 58 fauness and level 70++ harnessed horse. maybe if it's possible, i hope this system change back to the old one, because by doing such,we can ensure players who invest their money on game that their money will not be wasted they will have all the fun they want to have.