Reference why a/c are not parked closer to the terminal all the time. I'm not an airport or airline employee, I work in ATC, and we don't allocate stands only let the pilot know where they are parking.
Sometimes it's because the gates are domestic only and so international aircraft won't park there or vice versa. Also perhaps your flight was the 6th flight due into the apron in that rotation, but actually arrived first. The airline won't change stand at the last minute unless absolutely necessary, as the handling crews have to move to the new stand, so your stand is left as it was. Also, even though you may be first in, the aircraft might be the last one out and so again left alone.
These are just some of the reasons why your stand allocation may be illogical. During the night, there are so many aircraft towed around an airport, I think that they are in alphabetical order by the morning!
Anyway hope this helps.