I once bought a Samsung phone. S3 to be precise. It was the worst phone I ever owned, and I had quite a range of various models from various brands. It couldn't play music without skipping or stopping at random moments. Battery life, praised in reviews (which I decided must have been paid for) was so miserable I had to charge it twice a day, and helpful suggestions on Android websites were "switch all the useful features off". SD card would randomly disconnect until in desperation I stuck a piece of paper on the back to ensure connection. My first one bricked itself at night, failing to wake me up on an important day and, more importantly, losing all the data. Replacement restored phone numbers from Samsung backup, but hardly anything else. Oh how I mourned my decision not to buy an iPhone again.
Then I got an iPhone 4s as a present. And I found out that Android has one killer feature that is super important to me: widgets on home screen. I got so used to my calendar being displayed every time I looked at the home screen that I immediately forgot two business meetings because iPhone couldn't do that. So I sold the iPhone and the Samsung and bought an Xperia Z3 Compact. Waterproof, dustproof, wireless charging, microSD slot, blazing fast and smooth and without all the Samsung crapware. And -- who knew? Android can actually work really well!
I consider Android superior to iOS for that one reason -- widgets on the home screen. I don't care much about Siri. But no advert of Samsung can ever make me buy their phone again, even if they wrap the display all over the phone, make it clean the house, do the dishes, take WIDE ANGLE selfies from space, insert my dead Nana into them and wirelessly charge at 50 meters from the charger stand. I agree fully with the poster who said Samsung give Android a bad name. I take pure pleasure from tracking the sales of S6 being disastrous. (I know Sony sells about 5% of what Samsung does.) With my Z3 Compact and with iPhone "it just works" was true. With Scheissung Crapaxy I had to buy software to replace the stock just to make it work at all. I bought Poweramp full version and tweaked all audio settings to the max and, joy of joys, it only skipped parts of songs every 30 minutes rather than Samsung's 30 seconds. And in order to be able to make a full backup I had to root it, losing warranty.
TL;DR version: If you bought a Samsung phone, I am sorry for your loss and hope you come to your senses soon.