Do we need a reason for practicing continuous learning? Whether formal or informal is the motivation to learn best just driven by the potential to gain knowledge, rather than a specific social or monetary goal.
The ongoing acquisition of knowledge or skills through experience, study, or by being taught directly by others undoubtedly has value even if the return on investment cannot be specifically defined.
What percent of my personal health and wealth is attributable to ongoing learning? I do not have an exact measure in monetary terms but I have always found ways to leverage my knowledge gains even if only to improve my feeling of personal well-being.
Embrace the Experience
Learning objectives are generally focused on specific topics and learning objectives (e.g., mathematics) however the ways we are taught and how it is received is an important part of the learning experience itself (beyond just the content).
Ongoing interaction with teachers and other learners can go well beyond the learning objectives. Social interactions or working together with others to gather and collate information provides a side learning opportunity to increase our overall maturity.
Sometimes the most important knowledge gains are derived from the ad hoc or informal practices associated with structured learning.
Practice
All areas we undertake to upgrade our knowledge from time to time don’t need to be associated with specific future plans. That is we do not need to take a course or training with a specific goal in mind.
Ultimately should find a way to employ the outcomes of our training when done. Without practice or actually using the knowledge we gained, learning may be wasted.
In some cases though exactly how we are going to leverage what we learned might not be clear to us until we are done.
