... to keep on learning ...
... to help other people learning ...
... and because it is fun!
In the spirit of teaching and learning ... and fun ... here are some LatinLOLCats with advice about learning (long ago I was a Latin teacher):
The mind is nourished by learning and thinking.
Let him learn who does not know,
for ever thus does wisdom grow.
for ever thus does wisdom grow.
There is never enough learning.
One learns by making mistakes.