The MSR Miniworks should last years and years. It has a ceramic filter. Basically, to clean, you just use some scotchbrite to sand it down, exposing the next layer down. I can't imagine how long a ceramic filter would last, but definitely a long time. Also, I bought an extra filter and o-ring kit too.How long does it last? Uses? Several years?
So then, if you were made to survive for the rest of your life in the wild, then you would not be able to use this aid.Boiling is great for food(freeze dried, ramens, etc), but for drinking water its a huge fuel/time waster in a survival situation. Plus, who wants to wait around for the water to cool while out on a hike. And tabs..? No chem taste(tabs) either or waiting for them to take effect(30 minutes?..a good filter will pump a liter in 60 seconds flat. Bam. ..nice clean water). Plus for either, you have to first dip your water out from somewhere deep enough to allow so. Up high in the mtns, many many times theres only a small tiny water source to pull water from. Most filters use a small "acorn" that can be dropped into a small seeping hole the size of a 1" deep ashtray.
As far as lasting, my PUR Hikers element lasted a couple of years of backpacking 30ish times a year back when I backpacked alot, before I felt the need to replace it(of course this depends on how dirty the water is on average that one is pumping). Even then, it first just gets harder and harder to pump over the course of months.
Yes, because I live up in the WNC mtns next to the Smokey Mtn Nat Park, very isolated(about as isolated as one can get east of the Miss River) with a 'gravity fed(no power required)' spring Well system((huge tank hidden up above my place on 10 acres. The other 1000 acres around me is family owned as well. Then its US Forest service land/indian reservation lands around that) thats never gone dry even with the record drought we've had the last few yrs.So then, if you were made to survive for the rest of your life in the wild, then you would not be able to use this aid.