> But if I didn't listen to the devil from time to time, I wouldn't stay up to date with the latest technologies, and as a result I wouldn't be able to pay my bills.
It appears to imply that new technologies do not count as fun, which may be the case for the author, but not generally. And there are indeed fewer open vacancies requiring older (decades old) technologies exclusively, with vacancies often including currently-hyped technologies in addition to established ones, which opens more options and potentially leads to a higher salary if one employs those newer or hyped ones, but I guess that it is quite possible to pay the bills while using mostly the older ones, too.