My home is my castle. It doesn’t belong to you, and it doesn’t belong to the state. If you are law enforcement and want to come in my home, call and make an appointment. Got it? If that isn’t good enough for you, if you think there is evidence of something or other you want to see, then put good detectives on the job (like you did at one time in history), watch for me to leave, detain me, and then take me back to the home and let me use my key to the front door. Or get a locksmith. In other words, use your brains to gather evidence. Otherwise, I don’t care if you lose that evidence. I only care about my safety, and the safety of victims like Mr. Guy.
I've often said that if evidence of the crime is so ephemeral that it can be eradicated completely if the suspect isn't taken by surprise in their home: is it really a crime?