maybe if I grew up nordic skiing....but i didn't.
I've owned dynafits for about a year and have used them on everything from rainier ascents and descents to bc laps here and in the rockies. they have treated me well. their still in one piece. But I do feel like i'm limited in their performance sometimes.
In my opinion, there are situations in which I want to destroy them. Too many laps in heavier snow leave them caked up with ice and they need tending to. In the rockies, I've had no problems because the snow is lighter and thus doesn't seem to accumulate under the toepiece. Lightness is the plus, but don't take chances with that toepiece...latched to your leg those skis will tear your shit up in cartwheeling crash. the toe piece will not hold you in in any kind of twisting fall. Cliffs are out too, the pressure placed on the tail of the ski could potentially break the toepiece i think. Thus, there are things I won't ski because of the binding I wear in the backcountry. reports from friends in jackson say they are dropping 80 footers (probably like 50) on the fritchi freeride soo...if that's what your into.