Yup. I find the idea of patriotism nauseating though. Rather celebrate cultural differences and individuality than the idea that being born somewhere should define you and somehow give you special dispensation.
Firstly, for a supposed tolerant and understanding ideology, your way of thinking is so bloody narrow-minded that it's actually funny, because you obviously believe yourself when writing this nonsense. There is a huge difference between patriotism and nationalism, which is where your second sentence is wrong.
Secondly, you would not be able to support actively Manchester United as the arguably biggest club in the world in modern football if you weren't English and if the club wasn't established thanks to the opportunities that England provides to individuals and organisations. I imagine if the team was to change countries all of a sudden, you wouldn't be so eager to celebrate anything and would likely be very pissed off.
Thirdly, a strong national team could drastically improve both the overall quality of the league, as well as provide a way to reduce the enormous amounts of spending that are going on in the Premier league, compared to other countries. It also would provide an opportunity for the local kids to have a future, develop better and in general create a good environment for people to prosper.
Lastly, Manchester United has always had a stong core of British players, staff and international representatives, The history of this club is what makes it so special and it would have never been the same if it wasn't English and situated in the circumstances throughout the decades. I am not English or British myself, but I always want to see such players, whether coming through the ranks or being bought at a young age, more experienced ones and the veterans leading the pack, because most of them understand the true meaning of the club far more than most foreign player can (there are obvious exceptions to the rule in our case). The intensity of football rivalries, both outside and inside the stadiums, is being destroyed as for most players, these games don't mean much more than the rest and they have only heard or read about what is behind them in terms of the history. I want to see more players fight for the badge and shirt, and not just play for the money or the possible accolades they could earn.
This is all my opinion, it's not gospel, but the way you took a very hard stance on your opinion and arguments, it spurred me to provide a different point of view.