TL;DR - it's time for a new windshield.
I've had my current windshield for 20 years now. Up until about a year ago, it'd been cracked by a rock only once - and even then, it was minor and easily fixed by one of those chip repair shops. Today, the glass is pitted and glitters in the sun. It has also taken at least four hard hits and on the last trip, a combination of freezing temps and defroster use caused the windshield to expand/contract unevenly, resulting in two of the cracks creeping into and across the driver's field of view. As such, they are finally annoying and I'll have to find somewhere to replace the whole windshield. Not looking forward to that, as I've heard it often results in leaks.
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