So that innocent citizens can pay for police misconduct? That is trying to make Right out of two Wrongs.
Absent the exclusionary rule, cops who use illegal means to get evidence that yields convictions will tend to get a "NEVER DO THAT AGAIN (wink wink)" from their bosses. Prosecutors have little incentive to go after cops who help them get convictions, and judges don't have any authority to punish such cops themselves.
On the other hand, if a cop uses illegal means to get evidence and cases get thrown out as a result, the cops' bosses are going to be very unhappy. Since cops don't want to anger their bosses, they'll have a strong incentive to avoid having their cases thrown out.
If the police mess up 0.1% of the time, then letting 0.1% of criminals get another chance to prey on society because of the exclusionary rule is a small price to pay for having a lawful police force. If police mess up 10% of the time, the 10% of criminals who are let go will be a small problem compared to the ones on the force.