I think that when one activates a butterfly the default choice should not be "Sing to" since this is not the most-likely action a Glitch will want to take. At least in my experience I am much more likely to want to "Massage" and then "Milk" the butterfly, and having "Sing to" as the default simply makes it more likely that I will accidentally choose that option and thereby lose a ton of energy. Admittedly, changing the menu order would cause initial confusion to those who already got used to the current menu structure, but I think in the long run--remember that Glitch is just getting started--the efficiency gains would overwhelm the efficiency losses during this adjustment period.
inb4: I know I could just use the hot-keys (e.g., hitting the letter g to massage), but that isn't the approach that is most-comfortable for me.