Hey mucker, we can at least pronounce "aluminium", "missile" and "probably" correctly, instead of missing half the letters!
The best thing about vehicles is that you can play the sneaky bugger with them, adding inches to your debus move by turning the vehicle for free on arrival, exposing the rear ramp exit of Rhinos at least 4" closer to the enemy. You could also put two together blocking the enemy's line of sight for your debussing squads, then next turn everyone piles forward, REALLY causing some anguish for your opponent. Do I hear someone shout "Beard!"? Well chaps, at the next tournament you attend, watch the real GW geeks do it. It's what gets these freaks to the finals.
Anyway, everyone's right-ultimately, don't underestimate mech armies in fifth ed. I've had my trousers (!) pulled down once or twice when some smart arse (!) has used a transport to rush, debus squad, shoot, assault, win, withstand a counterattack then contest the hard-fought objective in the last turn. Try standing up to a Terminator assault squad in a Landraider. Imagine Razorbacks with a ten-man combat-squadded marine unit that can both assault AND defend with ease, doubling their usefulness. Eldar Wave Serpents-try getting into a shouting match with one of those full of Fire Dragons or Banshees. How about an Ork Battlewagon toting a battlecannon and missile launchers and packed with Ghazkull and twenty Nobz, all kustom-weapon and Powerklaw-armed, painted red and rigged to shrug off shaken, stunned AND immobilised! Finally, your opponent's worst nightmare-a full squad of Berzerkers with a squad leader AND Kharn bailing out of a Rhino and heading straight for them next turn, all fifty-plus WS5/S5/I5 attacks on the charge...
Oh yes, mech lists are now the way forward.