I don't think 50% of players used them on a regular basis. It's probably more like 25-30%. If you take the players that tried it once or a couple times, then sure it's probably well over 50%. If I was a aging player looking for that last great year, then I would have used them as well. Unlike other sports baseball stats are different. Everyone knows that 500 homeruns, 3000 hits, 300 wins are special numbers. If you have a ton of players passing those marks, then why are they so special? in the other sports the only thing people care about are wins and championships. In baseball those are important but it's the numbers that people look at. Kerry Collins is 11th on the all-time pass yards list in the NFL, is he a HOF? Bagwell's numbers where close to HOF type numbers but because of the time in the game he played, he will be punished.