I believe you may have answered your own question
+1. However, what is the downside? I haven't received this offer (I've also only been CitiGold for a couple months) but if I do I will sign up. If you are a member you can ride 45 minutes for free whenever you want. Summer is almost here, maybe one day you'll get the urge to bike across the Brooklyn Bridge or bike to or from work on the day that you know is coming up when your subway line is inexplicably not running due to an "investigation" or "signal problems" (AKA MTA incompetence and underfunding).