The Al Gore Sapling 9000

PROS:
Eco-friendly
Cost efficient
Wildly popular with the peasant class
No snarled chains
Rust-proof
Pocket knife/sandpaper frame-modification-ready
Virtually zero threat posed by bike thieves

CONS:
Painful splinters
Pedal-less pedals
Flintstone Brand® Braking System
Possible strandings due to termite infestation
Invasive seat stubbin
Misaligned wheels = Premature tire wear
High fire insurance premiums
Bike Repair Shops: plentiful; Pedi Tree Surgeons: not so much
Unsightly sap stains