Your business is your vision. Every day you work to overcome different challenges to get to your goals. Your cashflow is the substance that your business thrives on. Tracking expenses should be second nature to your everyday business function.
The simple fact is, you need cash in your hand to run your business. If you only care about more money coming into your business than going out, you will lose sight of the objectives that you set in the first place.
All aspects of your business should point to bringing in revenue in order to make your ship sail smoothly.