Sadly I dont check here much. Clearly you didnt read it properly. Since when is paying for Netflix piracy and not supporting the people who make TV content? And where you get this idea of 720p content from? You can get 4k streaming nowdays...
My main complaint about Sky was the cost of it considering you get spammed with adverts every 10-15 minutes and not even getting the latest shows a lot of the time. You are paying 50 pounds a month but many people seem to be paying far more than this to watch often older shows/episode and get adverts. Yes you can record and fast forward through ads, but considering you are paying for it why should you have to do this anyways? Netflix, Amazon, Hulu, etc has much of the same content and usually even more upto date things, completely on demand and so no recording needed, there's no ads, and they are way cheaper than Sky. Whilst I agree 50 pound a month isnt much money, I'd still rather pay less for a better service.
As for sport, I agree, streaming them isnt great and for me its the only part of Sky worth paying for due to a lack of good alternatives.