Your first hires were probably mistakes. Mine were disasters; they demonstrated humanity's fascinating ability to self-implode. Hiring is hard.
You'll probably begin by hiring people who look like you. Not demographically (right?), but people who share the same traits you share: hard working, perfectionist, and maybe even unforgiving. Or, you've hired people you want to be friends with – people you'd enjoy going to a concert with or perhaps carrying on a different type of relationship with (i.e. platonic).
So while I was digging a bit deeper into SaaStr this evening I came across an interesting discussion between Sarah Lacey and Slack's CEO, Stewart Butterfield. Slack is a team of 40 year-old plus employees. Slack doesn't screen for age, but