Grumpy Old Wizard wrote...
What I said is absolutely true. If you play as an adept and want to move fast you will certainly do a lot of shooting.
And most of us have no problem with that concept. Powers in ME2 are meant to compliment weapons, not replace them.
For example:
1. Different ammo powers increase your weapon's effectiveness against different defenses (such as Disrupter Ammo against shields), and some also provide some crowd-control (CC) abilities, such as Cryo Ammo freezing unprotected targets.
2. Tech powers such as Overload and Incenirate can remove defenses completely, so you can then shoot the enemy dead. Cryo Blast and Neural shock will hold an unprotected enemy motionless for a short time, giving you an easy target to shoot. Cryo Blast also provides a bonus to weapons fire.
3. Biotic powers such as Singularity or Stasis provide CC against a protected enemy, stopping them from shooting for a short time while so you can focus your attention on the other enemies shooting at you.
Obviously, biotic powers such as Throw, Pull, and Shockwave are best used against unprotected targets, but this just opens up more options once an enemy is down to health.
Submachine guns, shotguns, and assault rifles provide damage bonuses to shields and barriers. Pistols, sniper rifles, and assault rifles provide damage bonuses to armor. Weapons and powers are meant to compliment each other, not replace each other. The Adept (and Engineer and Sentinel) rely the most on their powers more than the other classes, but that does not mean they should only use powers. Biotic and tech powers are best used to (a) strip enemies' protections so they can be killed by gunfire; or (

disable unprotected targets after their protections were removed by gunfire; or © to disable unprotected targets so they can be killed more easily with gunfire (or another tech/biotic power if you are so inclined).
Being a "caster" in Mass Effect (or ME2, and likely in ME3) does not -- and should not -- mean you use only powers to progress. You have weapons for a reason. You should use your weapons and powers together to optimize your combat prowess.