Life offers us choices at every point. We may travel only on one road at a time. By making a choice, certainly we are losing the experience of what other paths may offer. But it is not the end. As you proceed, there are many more choices to choose from. They divide and subdivide, fork out. It need not necessarily be the beaten path, well-travelled road.
It may be a pathless stretch. You may be the first person to travel and traverse the moor, the endless desert, cross the river and hillocks. Others may follow. But you are the pioneer. It provides new experiences which others are denied. We make choices based on impulses, for short term gains, mostly on false reasoning. We ratiocinate; we justify; we use crude logic; we convince ourselves. We do not make rational choices always; not logic, but expediency decides. We decide on certain certitudes, assumptions, possibilities and probabilities.
These may change over time, frustrating....