My feelings too. Yes, your bike will probably start in the morning if it has been connected to an Optimate, but it might fail on a trip or if you use the starter a lot and only ride short distances.

If your battery is slow to charge or won't, try dropping it onto a hard surface from 4-5 feet, then charging again. Something about shaking deposits off the plates, plus nothing to lose usually. Having said that, I'm inclined to invest in a new battery once I lose confidence in the old. Mind you, one thing to watch out for is passing the "lock" position and leaving the park lights on.

Apart from your eyesight when the case breaks open and you spray sulphuric acid everywhere! ;)