If you're asking yourself this question, you're not focusing on building your business. How to spend it becomes a distraction.
The converse also happens: for any business problem the easiest solution is to spend money. Leads? Leadgen firm. Hiring? Recruiters. Code? Outsource, or contract out. Testing? you get the picture.
Throwing money at a problem is a short term fix but fails to build competence at doing that thing. The lack of experience weakens your company in the long term. It's organizational muscle that didn't get exercised. It atrophies over time.
This might make sense for certain areas, but having too much money on hand makes it very tempting to solve all problems with this one hammer.