YMMV. The Ideapad I bought lasted over 7.5 years. During that time, I replaced the battery once and the HDD once (the HDD started to get bad sectors after 4-5 years, which isn't unusual). The laptop was actually still running fine, but after 7.5 years I felt it was time to upgrade it rather than replace the battery again. I had let my 2 kids play games on it quite a bit too, and it was looking pretty beat up. ;-)
OTOH, I've heard that Dell's Precision line is like the Thinkpad line (designed to last longer), but the (much more expensive) Precision I replaced the Ideapad with had a key break off in the first 6 months of much lighter use. It was still under warranty, but Dell knows their laptop keyboard design is crap, so their warranty doesn't honor broken keys. And of course, as soon as the warranty was over, the Precision started over-heating.
Next I replaced the Precision with an XPS 13 (which IMO is like a more expensive Ideapad line), and it was actually shipped to me brand new (ordered directly from dell.com) with a key already broken. Of course Dell tried to repeat the claim that their warranty doesn't honor broken keys, but since I hadn't even turned the damn thing on yet, and I ordered it directly from Dell, obviously I wasn't going to let that fly. After making them fix it, I've been using it for the past year or so, but I really don't like it as far as laptops go.
More recently, my daughter bought herself a new Yoga Ideapad. So far we both like it a lot better than either of the Dells I've had. I hope it lasts as long as my old Ideapad did, but of course it's impossible to be certain without waiting that long.