You wrote it in 10 minutes ... but took you an hour to write

I think you are over-selling the importance of quick coding. For example, Schach (1999) estimates that programming represents only 12% of total software development cost while maintenance dominates at 67%. So even reducing programming time down to zero saves you only 12% while halving maintenance costs saves you 33%.

Of course, hacking out a quick throw-away script in ten minutes, rather than an hour, is a big win. But for production code that must be maintained by many different programmers over a period of many years, it is more important to focus on maintainability.