Your light bulbs might work, but it doesn't mean you can't save money on your power bill.
Your omelettes might task just fine, but they would be much more delicious if you used organic eggs.
Your car runs fine, but you don't realize the ride is destroying your tires over time.
It's easy to get comfortable with our processes. A lot of us feel it's "good enough."
Nothing can be improved if you don't take the time to notice your options. What you might think "works" for you today, may not be working at all. That's the ease of complacency your feeling instead.