Why shouldn’t I just do it myself?

Why shouldn’t I just do it myself? Here are the top three reasons the IRS most highly recommend Enrolled Agents and I am listed in their registry of paid preparers.
My top three would be:
1) Maximum tax savings – we spend all year talking with other professional preparers and monitoring the tax laws for our clients
2) Piece of mind – your eyeballs & my eyeballs reviewing the returns, mean a lower chance of error
3) Time savings – because I do so many, I can probably do about 4-5 returns in the amount of time it takes one unskilled preparer to do their own