It really is, but I will never introduce anybody to Star Wars without starting with the original trilogy.
The numbering is really the only thing that bothers me, but that's an OCD problem. I still think they shouldn't have numbered them, and you just watched in the order of when they came out.
The PT works (yes, I said it works, don't shoot) because it's connected to the original trilogy. I feel you get more out of the PT if you watch the OT first.
Numbering them just makes the OCD people snap. I get a twitch in my eye thinking:
(1977) Episode IV
(1980) Episode V
(1983) Episode VI
(1999) Episode I
(2002) Episode II
(2005) Episode III
I've never been diagnosed with any kind of mental or chemical imbalance, but the ordering drives me up the wall.