It also goes a little bit beyond that: if one of your ports stops working (e.g. rust, water damage, etc), you can just buy a replacement port and you're back on

It also goes a little bit beyond that: if one of your ports stops working (e.g. rust, water damage, etc), you can just buy a replacement port and you're back on track, as opposed to "welp, I guess I'll have to do without it..."