My experience of finding a burglar in my house is limited to just the one occasion.
Caught a burglar in the kitchen after coming back from the pub, picked up a kitchen chair, smashed it over said burglars head, maybe kicked him once or twice whilst he was down and then dragged him out into the back garden by his hoodie.
Anyhow when the police finally arrive, they seemed fairly unconcerned when I told them, in fact they seemed to be positively quite cheery about it all. They took a statement and left happy.
Turns out it was a prolific offender who was about to get some serious time.
I never gave the burglar time to leave, didn’t even cross my mind, I just wanted him out, my way. ( I was a bit drunk mind)
I even got compensation :-)
EDIT: the point is 99.9% of burlagries are probably like this so it’s really non news.