I have cried in the past, when my team (Wolves) were relegated, heck I even cried tears of joy the two times we were promoted to the Premiership.
If you don't like football, then you can't even begin to understand, but don't ridicule people who get emotional over something that means a lot to them. Quite frankly, it isn't affecting your life, so why the fuck should it bother you?!
I can fully appreciate the tears of Leyton Orient and Hartlepool fans, the two teams relegated from Division 2, and into the Conference (semi-professional league). For both teams, and particularly Leyton Orient (who are in a dire financial position, thanks to terrible owners), there's a risk their clubs could face extinction due to the financial hit they'll face. There will be fans of both teams, who have supported them for decades, and the thought of their teams not existing in the future will be painful.
No it's not the end of the world, and yes there are more important things, but quite frankly the fact anyone would mock football fans for daring to have feelings/emotions, says more about those people than the fans.