This is sort of going off on a tangent, but one reason I really like LLCs as the "platform" for a small business is that they can keep your accounting so simple.
With a single member LLC that operates an active trade or business, by default the income and deductions get reported on a Schedule C form which goes inside your 1040. So no payroll tax returns are automatically required... and you don't have a 1120S or 1120 tax return you're doing.
This means you can form an LLC to run your business and let the LLC be treated as a Schedule C sole proprietorship for years and years...
If at some point, you want to step up to the complexity of a corporation, you can make an election to have your LLC treated as S corporation.
And then there are some rules about "undoing" your S election but you might even at the end of a small business's life again run the operation as a Schedule C sole proprietorship...
You can't save self-employment taxes with an LLC, but you limit your liability, keep open the option of electing S corp status, and you keep things easy enough to DIY.