OK, that question is somewhat vague... 'Left handed puppetry' or 'The vagaries of Baroque folk music in Alpine Austria, during Easter Week' would be of zero commercial value and you would need to be extremely bored to even entertain them.
Considering an industry specific BSc which should provide a reasonable jump in income for the 15-20 years before retirement.
The alternative, would be to seek employment as an unlicensed aircraft mechanic to build experience to first become a licensed mechanic/A Licence (3 years verified, specific experience required in addition to 12 theory exams... I have one left

) followed by a further two years and fourteen more exams (included within the degree if I choose that process) to become a licensed aircraft engineer/B1 licence.
The BSc includes the B1/B2 and reduces the five years experience normally required to two years but also opens up opportunities otherwise unavailable. The A Licence modules I have completed are accepted as an alternative to recent relevant A Levels/Level 3 passes.
My current role, whilst hands on within the industry, doesn't provide for experience beyond the occasional opportunity to assist, and whilst that is great for a bit of experience and might eventually open a door to the possibility of progression, it isn't a long term strategy... So I would be looking to move on within the next six months regardless. Basically I need to be building solid experience and quickly.
Has anyone else undertaken a degree a bit later usual? And was it worth it?