There's nothing wrong with either path.
For me, I like coding, just like I like eating and I like socializing. The fact that I eat and socialize at work doesn't mean I try to avoid eating and socializing outside of work. Similarly the fact that I use a computer at work and or code at work doesn't mean I try to avoid using a computer and or code outside of work.
My working on whatever my company wants me to work on is not the same as me pursuing a hobby even if they overlap in the activities required to do both.
Also, some people just really enjoy it.