It makes sense to maintain your concrete and avoid the substantial expense and hassle of replacing it after it becomes damaged. For concrete, sealing is a good preventative action to help prevent stains and damage from freeze/thaw as well as environmental hazards.
All types of concrete can be sealed with several different types of sealant to choose from. Even the mostly overlooked garage floor is a great candidate for protection. Your garage floor takes most of the punishment during winter months because your car drops salt and debris collected from the road and deposits it on the concrete where it attacks the surface often resulting in pitting, chalking, and flaking. If you own a vehicle that leaks oil you know how hard it is to clean off after a winter of leaking, even with a good pressure washer.
One popular type of finish for garage floors are epoxy based products that come with a very long service life and are available in many colours and can be installed with a grip surface to dramatically improve traction when wet. This type of finish is resistant to all oils, battery acid, brake fluids and of course salt.