XBox 360 1st Edition, PS3, Wii & WiiU: Keep or Not Keep?

I fear my XBox 360 1st model will rust up enough to no longer work well, but perhaps upgrading is like trading one bad thing with another. As for Wii and WiiU, it seems more frustrating for me to decide on what to do with Wii than WiiU. WiiU might be easiest to not keep. Mine has only 2 games built-in it that haven't been played much. PS3 I have is 1st Edition with backward compatibility and works great, but I heard someone locally had theirs no longer work any further. Any suggestions? It feels difficult to decide. I even have imported games for XBox 360 and PS3.

My XBox 360 has been protected in a plastic Sterlite container, but PS3 has been on the floor by itself. I'm sure they still work. For Wii, the online services are about defunct, but for WiiU, I am not sure, but I feel I may have to talk to a couple of my friends on them.