Here's the thing I tell myself and a lot of other people. Now, I'm probably gonna catch a lot of slack for this, but here it goes......There is really no reason, no reason at all, for a man (an average bodybuilder)to be constantly lifting more that 300lbs! Now, this of course doesn't apply to Power lifters and such who are competing. Even Arnold used to say it, It isn't necessary. You can get just as good a workout and see just as good of gains using 300lb or less and changing up your tempo or rep scheme.
Now, in saying that, I still want to put weight on the bar and move it. doesn't mean it's safe, sane, or needed. Just something us men want to do, "better then what we did before"