For me if I used the full array of features in Strava I'd pay for it. As it is now I don't. This means if I put my power/HR/etc data on Strava, basically using them as I use Golden Cheetah (powermeter software for Macs) or WKO (the commercial powermeter software but for Windows). I used WKO first, then when I went to Macs I started using the open source Golden Cheetah.

Since I have everything on WKO / Golden Cheetah I'm not interested in adding yet another task to track my data. My powermeter isn't compatible with any GPS device (wired SRM). If I had GPS integration with my powermeter I'd probably go 100% Strava, keeping everything in one place. For now I do Strava on my phone, power stuff is SRM.

BTW to me $59/year seems quite reasonable, at least for a reasonably serious cyclist. I know that my race license is $70 annually. My race entry fees are in the $30-40 range normally, fuel is about $4/gal (and I might use 4 gallons of fuel getting to/from a race), and that's just for one day of racing/riding. I don't do gran fondos or more expensive races but $50-200 is not unheard of for those kinds of events. I joke with friends about the cost of my trainer rides - if I ride for a couple hours and have a bar or gel or two it might have cost me $3-5 just to ride my bike on my trainer in my house! A lot of the group rides will finish with a stop for coffee/etc. I imagine $6 won't go very far in a month paying for stuff at such a stop.

Again, having said all that, I don't pay for the premium. I also avoid buying coffee out, I don't have cable here at home, etc, etc, etc.