LET ME HOLD TO SPRINT PLEASE

Please add HOLD TO SPRINT. Why its not an option baffles me. It gives the most precise movement inputs. there are options for aim and crouch but not sprit. why? over a year people have been asking for it. every option currently available for sprint gives the same result. I mean whats the difference between toggle and always sprint? a few less button presses. it would have been better to have sprint on hold by default and it some peoples pinkies are too weak give them always sprint. toggle sprint is the most inconsistent way of playing.  I CANT EVEN UNTOGGLE BY PRESSING SHIFT AGAIN. Who does this? What sick minds? Give me HOLD TO SPRINT,  ill turn on dt sprint and im set.