It's okay, you don't have to like RPGs.
Plenty of people prefer shooters.
I don't see moving from a very interesting RPG system with shooting-dice mechanics never seen before to another generic Gears of War wannabe as an improvement, quite the contrary. You can say that you like the shooter mechanics more than the RPG ones and that's completely fine, but not everyone likes games getting dumbed down to the point where you can't hardly distinguish one from another.
Talking as a TPS fan I'd rather be playing Vanquish, Rainbow Six, SOCOM or Gears.
Huge oversimplification combined with huge assumptions.
I love RPG's.
I love shooters.
I love fancy powers.
I love exploration.
I love interaction between well written characters.
I love a well told storyline.
So I feel the need to wholeheartedly disagree with the sweeping assumptions made of every single person who preferred Mass Effect 2/3 combat over Mass Effect 1 combat.
Mass Effect 3 is for me the best in terms of combat. Though it could be a lot more challenging.
It has:
Customisable armour: where you can mix and match different pieces
Weapon mods: to alter how your weapon performs in a meaningful way
Binary evolutions for power ranks: Whereas Mass Effect 1 was 12 linear evolutions with each evolution providing 1% or 2% improvement to said power.
Faster paced combat: Okay this isn't for everyone granted, but the urgency of combat really fit the urgency of the Reapers coming to town.
Improved control: You are a much more agile combatant.
Better weapon variety: Not only is there loads of weapons to choose from, any class can carry any weapons. Some people still insist that the adept should be restricted to a pistol. So that the adept can choose hundreds of the same 2/3 pistols with slightly different stats. Very RPG right?
What is RPG really about?
No one is in agreement over this one. However for me, the RPG features that truly mattered, was where the first game actually excelled.
Mass Effect 1 had:
Meaningful exploration
Multiple hub worlds (if only they weren't copy and paste)
Large number of NPCs in which you can have conversations with
Meaningful choices (which to be fair Mass Effect 2 and 3 also had)
A plethora of side missions that you could randomly stumble across. Each with their own story. (Mass Effect 2 had these and Mass Effect 3 had fetch quests instead)
Interesting side missions on the Citadel
Interesting optional side missions in other hub worlds
When I say I prefer Mass Effect 3's combat, IT DOESN'T MEAN I DON'T LIKE RPG's.
Also it is possible to enjoy Mass Effect 3 for what it is without being a cover shooter fan.
Please don't dump your generalisations on everyone.
There are some things that Mass Effect 2 and 3 did better than Mass Effect 1 in my opinion.