2 reasons: the first is to show myself how I'm now "serious" about this; I've always have half-assed projects I mentally considered to be hobbies, but these experiments will be different. The second reason is related - I want to have a clear separation between my personal finances and the new venture in order to track my losses.

It is aspirational, but I needed to take the step for self-accountability and self-motivation

What about taxes on LLC?

$300/year to the state of Delaware works out to less than a dollar a day. The LLC is a pass-through entity (single member), so federal taxes will be handled with my personal tax filing. The lack of profits keeps my bookkeeping and taxes simple, if/when it become profitable enough that income tax categorization becomes a disadvantage, well, that will be good problem to have.