Decades, no, of course not. But I'm still using my aluminum Apple Keyboard from 2007 and my Magic Trackpad from 2010, so yeah, I do tend to keep them for a long time because when you find a keyboard and mouse/trackpad that feels right you stick with it. If I'm going to pay $129 for a new trackpad I'd like to know it's going to last me at least 5 years without diminished charging periods. My current Magic Trackpad goes about 2 months between batteries. Yes, they are throwaways but its consistent throughout the 5 years of ownership. Will that be true of the Magic Trackpad 2?
Everyone is saying "finally they got rid of the roll at the back of the trackpad!" I don't really understand that complaint as I fail to see how it's a nuisance. I like the idea of a rechargeable but there should be a way to replace the battery as I'm pretty sure it won't have the same charging power 3 years from now.