Chuck, stick cars are way cool. With that said, I have listed a few pros and cons below.
PRO - You don't need to bring a golf cart or scooter to the track with you...you're not leaving your pit area all weekend.
CON - Clutch dust doesn't come off
PRO - Since you don't leave your pit area all weekend, everyone knows where to find you
CON - Budget is considerably different than with Automatic
PRO - No sunburns...the underside of the car casts quite the shade throughout the weekend
CON - Early mornings all the way to late nights(that might be a pro...depending on your idea of fun, lol)
PRO - 3 Pedals, 7000rpm launches and 10,000+rpm finish line!
CON - Don't make enough runs in a weekend...but every run is a learning experience
PRO - Looking at a great graph of your run on racepak is incredibly satisfying
CON - Looking at a bad graph of your run on racepak is incredibly humbling(but you can't learn if you don't fail)
CON - You need to buy lots of spares parts
PRO - You get to buy lots of spare parts!
Have fun!