R’ Chaim of Volozhin illustrates the importance of doing mitzvos in their proper time: The Evil Inclination begins by convincing someone that it is preferable to pray with proper intent, even if one must do so past the assigned time.
The next step is, “Take your time. You have already set a precedent; pray whenever you are ready!” By indulging such laxness, a person can eventually be swayed totally from doing the mitzvos. ~ The Pirkei Avos Treasury
This reminds me of a time when I used to convince myself that it is ok or even preferable for me to daven at home rather than with a minyan since it allows me to take my time and concentrate better. – That was definitely the yetzer hara (evil inclination) talking.
Emuna Daily 
“This reminds me of a time when I used to convince myself that it is ok or even preferable for me to daven at home rather than with a minyan since it allows me to take my time and concentrate better. – That was definitely the yetzer hara (evil inclination) talking. ”
Agree – BUT – if you were consistently davening on time, and weren’t lazy about it (and a minyan wasn’t so readily available in your neighborhood)….I think you get some mitzvah pts for that 😉
True, but I basically have a minyan factory a few blocks away, so I don’t have much of an excuse. I could also use the extra mitzvah points.