OK, I'll bite. I don't like crossbows for young healthy people, but they are here. This can all easily be fixed with a one buck/year rule, and use any weapon you like. There will be less crying from all involved. It is not arguable that crossbows have huge advantages which can simply be seen by harvest numbers. I do believe rule changes will be needed (one buck per year rule is the easiest) to stop gun hunters from quitting at accelerating rates.
However, the below is frankly ridiculous, and I am forced to respond below:
"I have a buddy who can hold his compound bow almost indefinitely because of the 85% let off. My xbow weighs in at 15 lbs. With 2 bad shoulders It can be held up for a mere couple seconds at most. "
You can't use a rest with a vertical bow. A lot of guys use rests, and you can hold the xbow all day. There are crossbows on the market half the weight of yours. Also, the simple fact movement is required before the shot is a detriment to vertical bows. Deer don't see you draw a crossbow unless you are doing it wrong.
"My buddy squeezes his trigger on his compound, just like most xbows do. By buddies scope puts to shame what is available for a xbow."
My friend has a Ravin. It is perfectly set up with yardage markers at different distances and is an incredible scope. No need to site it in at different yardages as it is made for the bow and bolt.
"His arrows fly at 400fps, my crossbow bolts almost fly that fast. And his fly quit a bit farther being heavier and hit harder."
Unless your buddy is pulling 90 lbs, shooting a bow with aggressive cams, and shooting light arrows (above you say they are heavier) and heads there is no way his arrows are flying anywhere near 400fps. Most people can't get to 300fps with even a 70 lb bow with hunting arrows and heads...real hunting setups. Shoot your xbow and his bow through a chrono and you will see.
"So. I challenge anyone to try in vain to explain how xbows have an advantage and lower game numbers."
My buddy's 8 year old girl tried and shot his Ravin for the first time this year at 20 yards. Pattern of 4 inches at 20 yards with every shot. Really no more to say, and you should be able to figure out why crossbows are a huge advantage.