Either there is good information out there to back up your position already, in which case just link to it and we'll check it out, or you are very confident in your position without information to back it up, in which case we don't have any compulsion to believe you to be correct.
Statements that can be made without good evidence can be rightly dismissed just as easily.
You have given us nothing to counter? At least nothing but vague hand-wavey rhetoric.
Costing the UK overall $178bn is going to harm us all in the long run, so the initial article is your starter for ten.
If you want us to give a reasoned counter to your position, you first need to properly describe your position. Spouting “well you haven't cited sources either” when we ask you to cite sources is playground stuff, in a similar vein: show us yours and we'll show you ours. If you make claims and refuse to substantiate them, then complain that a counter isn't sufficiently substantiated, it isn't us that looks like they don't know how to properly discus things.
Statements that can be made without good evidence can be rightly dismissed just as easily.