If you’re innocent, why do you care if the cops search your home?
Is that a serious question?
1) Fourth Amendment. (That alone should be enough.)
2) Fishing expedition (= witch hunt).
3) Public leaking of private information.
4) Planting evidence.
Those are just a few.
If you were a teenager who lived an upright life, yet your parents invaded every aspect of your private life, and your room, whenever they wanted and without your permission, would you care?
Ask Manafort how he feels after the cops raided his home at 3 AM (terrorizing his wife). Ask Flynn how he feels after the cops raided his mind without warning (devious interrogation without attorney present).
Cops are cops, Federal or not. They are not our friends.
For this reason I have opposed the so-called Patriot Act from the start. Michael Savage endorsed it at the start, asking the very question you posed. He has finally caught on to the inherent potential for abuse.
Uh, because they are not like the Merry Maid cleaning crews.
Don’t be stupid
These days it's almost impossible for a law-abiding citizen to go through a day w/o breaking a number of laws - and when "they" come after you, they will use any subterfuge possible to insure they get you.