This is a common fallacy regarding test driven development. I use BDD/TDD MORE as a single developer. I may spend significant time writing tests, but the product is significantly better and I spend less time tracking down bugs.

The time you "lose" on the frontend of development is made up on the back.

I know that in my mind. That's why I call it a syndrome - it is irrational. Without others, you make worse decisions because they work immediately.