You know what they say about opinions.... so here is mine.
I drain my tank completely, and refill with fresh fuel a few days before my first ride.
Why?
Pump fuel goes to heck fast (loss of octane etc), collects water all summer, and the season is too short to miss the first weekend (or more if you burn down from deto, or clogged up jets/injectors leaning out your motor).
Can you get by never draining fuel? Probably. Could you have problems due to not draining? Maybe.
Will draining completely, and refilling with fresh fuel cause you problems? Not likely
Why not drain, and refill with fresh fuel is the real question to me.