Jeans and T-shirt Lodge

I cannot understand why we have such a strict (and oppressive) dress code in Freemasonry. I wear a suit and tie to work all day. The last thing I want to do is wear a suit in the evening when I want to relax. I associate it too much with work. There is a Dutch saying: 'Freedom rarely comes wearing a tie.' Whilst I recognise some people's desire to dress smart, is anybody interested in starting a 'jeans and T-shirt' Lodge? ;-)