I'm also on board with just living with it.
Like you, when we closed a couple months ago, we blitzed through a number of high-priority projects and then came up with a much longer list of other things we'd like to do. The absolute best thing is to sit on those "other" projects for a few months and really assess whether your gut reaction matched how you actually use and/or perceive whatever the thing is.
You may find that it's not a big deal. Drop-in sinks don't look nearly as 'clean' as undermount, even if you aren't a fan of the shape right now. And once you cut the granite, there's no realistic chance you can go back to undermount without replacing the countertops. Plus, with how the faucet is currently mounted, you'd need to get a new sink that has a very deep back ledge, otherwise you've got a potential gap where the current faucet sits.
Something else to consider about a new sink is that your garbage disposal is located in a really great place, as far as allowing the most storage in the cabinet below the sink. If you change to a single bowl, the disposal is going to be a few inches lower and may not allow for room underneath it. If your ideal replacement sink is a center-drain, you've really drastically cut down on the usable space beneath the cabinet.