As a rigging inspector/instructor on our buoy tenders (Coast Guard heavy lift ships), I am not a fan of flat synthetic webbing. We would often intentionally damage different pieces of rigging gear, take them to a rigging shop, and pull test them to failure. The flat synthetic webbing is extremely susceptible to UV degradation. I forget the numbers, but it was something along the lines of 6 months of sun exposure results in a 45% decrease in tensile strength. If it's not bright and yellow like new, it's been degraded. Also, just the slightest nick in the webbing will render it useless. Putting a 1/16" nick in a 3" wide strap results in the strap failing on a test bed long before it ever reaches its Working Load Limit.
The industry standard, and OSHA requirement, is a visual inspection before EVERY use. Also, a rigging gear's Working Load Limit (WLL) and Breaking Strength are two different items. NEVER exceed the WLL!
"I had rather be on my farm than be emperor of the world."