When we talk about QBs - The real problem isn't that the Bears have "ruined" all these good young QBs. The real problem is that we've barely even drafted any good prospects.
In the past 35 years the Bears have drafted 4 QBs in the first round:
Cade McNown
Rex Grossman
Mitch Trubisky
Justin Fields
Justin Fields is the best prospect of this group - mostly because the other 3 were reaches/bad picks.
The truth is most QBs bust - and you have to take more swings at the most important position.