Let’s consider an example:
You go for a walk in your neighbourhood and notice that the bins are overflowing and you duly report this to your councillor. Next week, nothing has been done and the bins are still full and starting to smell. A while later, the local childrens playground is vandalised. This time it’s reported, but all that happens is that the broken swings are removed and not replaced. It doesn’t take much inaction from your councillor and where you live can start to get very ragged and any sense of a welcoming community can drift away.
These may seem trivial, but they are precisely why you must use your vote.