Because I trust that he only choose these type of people for the courts, period.
I admire your emphaticness. But in order to wrap this up, I'll educate you a bit on process. Every one of those nominees had a public record that could be evaluated, and every one of those nominees was evaluated and passed by White House staff members, based on that record, before President Bush made their nomination. Every one of those nominees went through a Judiciary Committee hearing on their qualifications to be a Federal judge. They passed because they had a record demonstrating their skills and a recognizable set of legal qualifications.
Here's an example:
Here's an example of a nominee who has not been a judge previously:
Here's the page for Harriet Miers:
I will let you trust the President as much as you want. As far as I'm concerned, she's at best a District Court pick.