What are you trying to achieve? Is it personal safety from intruders? Or safety of possessions from burglary or damage? If the latter, do you really own anyth

What are you trying to achieve? Is it personal safety from intruders? Or safety of possessions from burglary or damage? If the latter, do you really own anything that cannot be re-purchased? Any works of art or otherwise irreplaceable high value items? If not, just get insurance and do whatever the policy requires (window bolts, certain grade of locks for doors, etc).