This is my experiences this week...
You hang a camera, get the view just right and the landscape guy places a tree right in front of it the next day.
Your best placed junction box is now held hostage by a 6' ceiling tile bolted down by an exit sign and that bad patch cable standing between you and a job well done is now just out of reach thanks to some architects dream.
The device that fails is always the furthest away, and requires multiple trips up stairs to figure out the issue.
You realize that your electrical contractor forgot to perform your rough-ins in a parking garage, places camera right behind a light fixture, fixes it by lowering your camera down below posted height, only discover your camera was too low when said electrician hit it with his truck.
You are troubleshooting why a device won't show up in software, you swap switch ports on the device to get it onto a known good VLAN to default device, now two devices won't work, you spend an hour discovering their network admin enabled port security.
Your electrical contractor does rough ins of wires for doors, doesn't give a damn about labeling just places labels on cables, you can't figure out why your Rex and door contact are screwed up, then you realize said electrician just stuck labels on cables, now have to fight 6' ceiling tiles, HVAC and fire alarm crap in your way to change cables. Questioning who the hell specified 6' ceiling tiles.
Offer to general contractor that you would install strikes (doors already prepped for them) first strike goes in well, next 12 doors you realize that every door frame in the building is warped, and none of the strikes fit, and you spend the next 12 hours and work until midnight grinding door frames because your life safety inspection is the next day.
You look out window of new building during lunch time and see electricians coming out of the bar across street... instantly things become more clear on why your rough ins are so wrong.
You look out window of new building during morning break and see general contractor coming out of bar across street... instantly clarifies why the floors and doors are not installed.
You bid the job because it appeared to be a Gravy Job, spend the next day sitting in bosses office trying to explain why it took 5 hours per door, when you quoted 2...
After all is said and done, customer calls and said that card reader is on wrong side of door because your electrical contractor can't read a print, and at midnight your on autopilot and its the last door of the project.
Ordered 15 Honeywell Motion Rex's and Single Gang Adapter Plates from ADI, 15 Bosch Rex's show up, with single gang adapter plates that don't include screws, spend afternoon searching for screws.
Turn system and you realize that your version of Normally Open is not what Bosch felt should be Normally Open, Realize that all Bosch REX's have to be wired NC, thankfully they are mounted on the wall and not to the 6' ceiling tiles...
I kid you not, this has been my week...