Sliding glass doors are an invitation...
Windows can be inviting, or not- any window chest high or more is tough to climb in, different window types are easier or harder to pry open, and security film can make a window troublesome to break through.
What is beside the door is as important as the door- a sidelight or a thin sheetrock-vinyl sided foam wall can be broken through to get at the deadbolt from inside, regardless of how stout the door is.
Doors do best with a couple pieces of 3/4" ply put between the studs on each side, to resist the above, and also to keep the jamb from being pried sideways and thus freeing the bolt.
If someone is serious about door security, it would be prudent to cut back the siding a bit to address the jamb-stud interface at the same time as installing a new steel jamb and door. At this level, a deadbolt less subject to bump-key would be a good idea.
Speed of entry is really important- if it takes time, it increases risk for the miscreant.
Most entries are through unlocked doors or glass sliders.
Remember- no matter how safe your area is, it only takes ONCE. Our safe little rural area in Western WA. had a double murder here a few months ago- some @#$% drug-bum broke into a home looking for stuff to sell. Killed the couple in their bed. I am not positive, but seem to recall he got in through a sliding glass door. POS was staying in a run down trailer next door.