Convenience has different meanings for different people. For the OP taking care of a straight is convenient. For me it was a time suck. I found it far too easy to geek out on keeping that perfect edge. For others the amount of time spent changing a DE blade makes it less convenient than using an injector. For many, shopping is inconvenient. I do not find online shopping inconvenient. I get two weeks or more from a blade. So the amount of time spent each day on shopping and changing blades is quite small. However, in the end what makes me decide what to use is simply what provides, overall, the most pleasant shave: hot water, good scents, comfortable shave, smooth result. Ergo, I like a puck of hard soap, a badger brush suited to face lathering, a DE with a proven blade, and a light but bracing and ephemeral aftershave, all employed in a process taking about seven minutes.