Simple really, if are anti British (England) then why must pro British (England) butter your bread on both ends........
Truth be told, I like being British and am proud to be called British. The majority of Scots have no problem with being Scottish and British, that's why the referendum ended up as a 'NO'. We look on England as a brother and our great sporting rival, and we of course like to get one over on our brother.
But in these times of Brexit uncertainty with so many ignorant Colonel Blimp types like you having attitudes like this, it is becoming difficult to support the union when the jingoistic rhetoric rises and the true feelings come out. I'd always looked on England, Wales and NI as our partners, but as the worst type of people such as yourself continue to insult and belittle, I have to admit my inclination is to tell the Union to go and fsck themselves.