I bought the first Android device available, and have had several Android tablets (still have one), and even had a Yotaphone2 (briefly). Android navigation is a hot mess, and gets so tiresome. I use it begrudgingly--I'd use my Ubuntu tablet more if it were not so basic. Meamo/Meego/BB10 swipe heavy OSes are just so much better (not having used Sailfish I can't vouch, but I imagine...). They are so fluid and make more sense. Frankly I am pretty surprised you've used it and don't immediately see the difference.