What's the purpose of weight classes when fighters rehydrate to a higher weight?

[Rockin']

Apparently amateurs can have same day weigh-ins and not die yet Pros cant

Its all BS

professional and amatuer bouts are night and day to eachother, You just cant compare the two in this regard.....Rockin'

[ИATAS]

Apparently amateurs can have same day weigh-ins and not die yet Pros cant

Its all BS

amateurs don't take massive punishment though. Usually the fight is stopped at the first sign of trouble. On top of that of course they have head gear.

I think what the IBF does, 10 pounds max, should be the universal rule.

[PUK_MY_DANG_34]

To my understanding weight cutting was originally meant to give fighters a weight advantage on fight night, but now that everyone cuts weight the advantage seems to be gone. It seems like the actual fight night weights for the various weight classes might look something like the weight classes in the unified rules of mixed martial arts.
Flyweight 125 lbs.
Bantamweight 135 lbs.
Featherweight 145 lbs.
Lightweight 155 lbs.
Welterweight 170 lbs.
Middleweight 185 lbs.
Light Heavyweight 205 lbs.

[Furn]

I don't get all the complaining.

It's the same for both fighters, both have to weigh the same at the weigh in. Both can rehydrate as much as they can.

If one fighter can naturally boil down and regain more then that's good for them. It is that different to one guy having longer arms or more natural speed ?