How do you like to do your grocery shopping? Me, I've been going by motorbike for years. I wouldn't say I do so exclusively (I mean, I live in a place where we have winter snow and ice to deal with, so definitely not).
But will I write up an entire list of things we need, then go hit my favorite places to get X-Y-Z ingredients and stuff them all under the seat of my Burgman? One hundred percent.