If someone can run a business on their own, there might be no need to bring in a partner, as partnerships can sometimes lead to complications and hurt the business in the long run. Partnering with someone who has different ways of working or priorities can lead to disagreements.

On the other hand, an experienced and responsible partner who shares the same goals can be a great asset. You would have someone who can offer a different perspective when making decisions and possibly bring a wider network of contacts to help expand your business.

Ultimately, it depends on who you partner with, whether your personalities fit well together, and what your own capabilities are.