Real simple, the dime that you wanted in HS/College was around that age, but you couldn't pull them then.
Now you are on the #GMB steelo and that youthful dime will go for a man (ie #GMB bretheren) and not knuckleheads their age.
Also young chicks think you are a wizard if you can do math without a calculator when you take them to the Red Lobster (since they can't tell the difference between Red Lobster and McCormick and Schmick's)