My draw weight is set at 65 pounds. I want to be able to have a smooth draw no matter what position I'm in and when my muscles are cold. I get plenty of speed at 65, so there's no reason to max out the limb bolts. Maybe with older bows 5 pounds made a more noticable difference, but today's bows are much more efficient. I have a friend that shot a 90 pound BowTech Tribute. When the 82 Airborne came out, he bought one set at 70 pounds. He had to move his 80 yard pin less than 1/16 inch to hit the same spot.
Next to slamming the release, shooting too much poundage is one of the biggest mistakes bowhunters can make. If you have to aim toward the sky or even distort your face to get your bow back, your letting your macho side cloud your better judgement.