Edges of Life: using visual metaphors

I do like visual metaphors. During a recent mindful photography practice I was walking from home to Mumbles (a three mile+ stroll) when I took the first photograph in the selection below. At the time I was drawn by the change of tone and texture and chose to represent this (in my mind) in black and white.

After the first photo I realised two things. Firstly that there were lots of opportunities for similarly themed photos. Secondly that the movement from one texture/tone to another could represent a transition in our lives. Change is a constant in life. Some of these changes are sudden, jagged and distinct, others are more gradual.

I thought they would look interesting as diptychs; comparing one life change to another. The last one I felt worked best in colour. What do you think?