I'm one of those nutjobs who actually enjoys working with billing and payment. There's something soothing to writing software which has to be highly tested, well-written and handle lots of edge cases.

It's a sharp contrast to the day-to-day startup philosophy of "move fast and break things".

Most software isn't somebody's dream. It's just dealing with "dumb stuff somebody's gotta do" because there's a paycheck.

(See also - basically every profession. I don't know how many architects choose to design parking garages or dreary subdivisions, but hey, they gotta eat too.)

This kind of software chooses you :-)

Actually, it's quite rewarding once you get into it. Serious business, people depend on you getting it right, but still nobody dies if a bug slips by.

Getting into it requires a year or two, though.

One of the smartest things you can do is to work on dumb things no-one else wants to do.

Maybe it is no ones life dream to do it, but sometimes you just find a job and it happens to be something 'random' like this.

If someone asked me to work on this and gave me a huge salary, though, I'd gladly jump on it.

If by "this kind of software", you mean software that solves a problem that almost every adult in the country is guaranteed to deal with on a yearly basis... which involves mostly logic, forms, and arithmetic, without any really hard problems... yet which is too complex and ever-changing to want to do it without software tools, and also dry enough that the SV/VC crowd leaves your niche alone...

Yeah, I think that sounds like a pretty good area in which to choose to write software.

Isn't most software a variation on this type of thing, payroll, invoicing, etc.

Absolutely! I love problems that have an easily understandable value proposition like "we take the grief out of doing taxes." In my experience it's the biggest single success factor in writing good software.

So if you like to write successive business software--and get paid--this is a great problem to go after.