In my opinion, you need to decide what your priorities are? Money or job satisfaction?
Neither my main business nor my EBay stores are particularly taxing, interesting or stimulating. Infact they are pretty dull.
But, to me they are a means to an end. I'm more than happy to do them as they generate the income that allows me to do the things my familiy and I enjoy.
My ideal job would be a Sky Sports News reporter or an Ibiza night club reviewer, which would be awesome for a while, but if the pay was £10k a year it wouldn't last long.
If you can find your ideal job for similar money to what your on now then go for it. If not then think carefully, as 'Job Satisfaction' won't put petrol in the 370z unfortunately.........