What is there to admire? Money. She has made a very lucrative career. She also loves what she does. Just because YOU have a unrealistic prejudice against IR doesn't mean she isn't successful. Every girl who gets into the business aspires to what she has done.
Who doesn't love fucking? But to be paid for it is another matter altogether. Hundreds, if not thousand of girls enter porn each year. The majority are out in 6 months or less. Any girl longer than that struggles to make enough money to pay rent once the "newness" is over. So if nothing else credit her longevity. Plus the fact she makes a good living doing exactly what she loves doing. Also, she works primarily for herself. Money and freedom is pretty impressive in any line of work. So Lisa Ann deserves some credit for that.