When it comes to technique, while playing scales proper fingering has you use your outermost fingers of one hand to begin/end on the key note of the scale.
I have a piece I'm working on (Reflections by Dennis Alexander) that is in GM. The last bit of the last phrase is LH only. These notes are:
G(2) D,E,F#,G(3),A,B,G(1)
For fingering, technically I should begin with my LH pinky on G(2)and be putting my LH thumb on G(3) as I go up the keyboard. This results in a fingering pattern, if we're adhering to proper technique, of:
5,1,3,2,1,4,3,5
For me, I can comfortably play the passage that way or as; 5,2,1,3,2,1,2,3 (or 2). Basically I'm just walking my fingers along the keyboard and it's simple to do this and keep tempo.
At this point I've played it so many times I suspect I could use just my 2 index fingers to peck out the sequence and get it right on both notes and tempo. However, my question is more about technique versus anything else. Thus to the question.
Should I be pushing myself to use the proper fingering? Or is doing it the other (lazy but comfortable) way acceptable? I know it doesn't actually matter all that much in this instance because the piece isn't all that technical/challenging, but that's not really the issue.
So, from the lofty perspective of you higher level players, should proper technique always be something to strive for by us lower level guys? Or can we get away with casual Fridays at the piano?