I prefer to not use mics. One thing talking to someone IRL when LANing or back during the good ole days when playing splitscreen Halo 1 on Xbox or any other console game with a REAL FRIEND AND PERSON YOU CAN SEE but not comfortable using mic to talk to randomers online. Whatevs. Insurgency, BF games will have 2 suffice for FPS fix.
Plus in general i despise ''standalone mics''. Headsets is the way 2 go.
i think the difference between speaking irl and online is the smell of the sweating armpits.
seriously , did you ever seen Friberg (csgo pro player) watching f0rest (another pro player) in the eyes and make some sort of crypted gesture to ensure him he's going to plant on A?
I agree on the fact that you enjoy games much more with friends , smoking pot , drink beer , insult girls in the background blabbering etc but this is another type of entertaining. You can easily enjoy a game with a mic , speaking with other players all around the world and you don't need them to be your best friends....it's just a better experience.