Yep, we are all getting older every day. If you do not put in the 18 to 20 inch toilet now, you will be replacing it as old Arty works on the knees and hips.
People who choose to brew up their own storms bitch loudest about the rain.
Purchasing products to complete your home, you should never buy cheap. You don't have to purchase a Rolls Royce, figuratively speaking, but you don't want a '64 Ford Falcon either!