As a single founder you can write off funding until you're actually making money, at which point you'll start getting unsolicited offers you'll reject because you no longer need the money. The downside is poverty while you're bootstrapping and emotional issues like depression and isolation.

Regardless, if you think you can get revenue without funding I'd say go it alone because you don't NEED anyone else and you can always bring people on board (even as employees) later. A business that can get a few thousand a month within a year should be able to scale up into hundreds of thousands in annual revenue through word-of-mouth alone. At that point you can live without answering to anyone else. The other route of taking investment and cofounders means you get locked down and need a much larger exit to have the same level of freedom.

If you can afford to spend $5 to $10k over the next six to ten months, you might want to look at something like Start-Up Chile. They don't take equity so don't have the anti-single-founder bias that seems prevalent elsewhere, but the social nature of the program makes the startup experience less alienating because it makes you part of a cohort, and the funding can be useful for experimenting with different approaches to distribution and marketing you wouldn't be able to afford as a bootstrapper otherwise.