I like this approach because it puts all my reminders and notes in one place - my inbox, and more importantly, it's a place I'll actually maintain. The problem with this approach, though, is that it's clunky.
The solution? Jotter. Jotter is a tiny application that allows you to enter in a bunch of text, and click a single button to have it sent off to your e-mail.
When combined with a keyboard shortcut (Search + J), it's as fast to use as native notes application, but stores the content in a better place: your inbox.
I think you could even fancier if you took into account Gmail aliases like firstname.lastname@example.org and filters.
Jotter is currently free for the Android and definitely worth a try if lightweight apps are your thing.