Best thing to do is get any cracks or chips repaired ASAP…it’s usually covered under most insurance and won’t affect your premium.
Presumably the reason they are so ‘generous’ is it’s much cheaper to fix a tiny chip/crack than it is to replace the entire screen.
So on balance, just get it fixed, on most occasions it won’t cost you any more time than a phone call and arrange a mobile guy to come out and basically glue it up.
The alternative is the windscreen eventualy pops at 80mph on the motorway, and then the insurance company is looking at a multi-car pile up, and possibly several fatalities rather than a quick squirt of glue.