Why is there no aggrasive upcoming fast bowlers in cricket?

if you go back to 2000 we still had waqar, wasim, ambrose, walsh, gough, donald, among more all bowling 90mph+ with shoaib akhter brett lee mohammed sami, shane bond, harmison, simon jones,flintoff all ready to take up the speed throne but now as most of these names are nearing to the end who is there who can honselty bowl 94mph plus not even steyn if u go back 10 years he would be medium fast but is now labelled as fast there is shaun tait, and fidel edwards but these 2 are very inconsistant and lack the cl of lee and shoaib