You are drawing to a T high flush on a paired board with no straightdraw or overcard to give you extra
equity, and with no current showdown value. This is pretty much as bad, as a draw can be, so unless you are getting great pot
odds, its a fold. The reason why, this is so bad, is because, its very easy to "get there" but still have the losing hand. Lets say river is Qd giving you a flush. Thats great. But not so much if the opponent has QJ, because then they just made a full house. Or they have Kd9d giving them a better flush. Or they have AA or AJ, in which case they had you drawing dead since the flop.