Wasting an attack to draw cards? This is probably the most basic of lessons I've learned: having cards is power. Many a time I have had to end the turn without doing anything, just because I've had no cards, just a hand of stage one and twos with no energies, basics, or even supporters/trainers. Just Aerodactyl's drawing power makes it worth it.
Aerodactyl is probably one of the best starters you can play, since collect costs one colorless energy and you effectively triple your draw per turn. Aerodactyl has plenty of health, so most basics will take a while to bring him down. And, if you can attach a fighting energy next turn, you can keep those basics basics. If the opponent can't evolve his or her pokemon, you're in for some quick n' easy kills and your opponent's hand is cockblocked with evolved cards that they'll never get to play.
Not to mention Aerodactyl's free retreat cost, so that whenever you've finished building up your bench, you can bring it back and bring even more pain.
Tips: Just something interesting about this card- Aerodactyl is typed as weak to electric, yet its a fighting pokemon, which most electric types are weak to. This can make a match up between the two a brutal "damage-bath", so just keep that in mind.