If you are having fun, and it's a hobby: who cares? If it's in the professional setting, make sure what you are doing is not actually wasting time and/or money, i.e. be productive.

Do you people think we spend our weekends tweaking our configs because that is how we get our fun? Some do, sure, the vast majority have created their config once and find themselves more productive compared to whatever alternative you might be suggesting. Configuring vim or eMacs is an investment, as you are likely to still see it around in 20 years. Being familiar with one’s tools is the key to productivity.

Calling it an ‘obsessive hacker tool’ just shows you don’t know what you’re talking about, but come with preconceived notions about why people prefer other tools.