Aspiring musicians may want to know why one would choose to play bass over guitar, or guitar over bass?
The problem with starting with the bass is that it is not a very good instrument to play by yourself. Many bassists started because their band needed a bass player. Most would never go back. If you sing, you will probably get more pleasure from the guitar (or piano). However, you can play more than one instrument, it just takes a little more effort (and money) to play bass.
On the flip side, there is nothing wrong with starting on the bass (or flute or violin), and it is pretty easy to become a solid beginner in a short time. And it is satisfying to make those warm tones and low growls.
Make your choice according to what your goals are. Either way - you win!