One of the hardest things for me is to define my level of knowledge in something. Nowadays I consider myself a Front-end developer because is the area I know the most and I'm most interested at. However, I'm also able to work on back-end side (Not the same knowledge, but it's sufficient most of the time).

I feel like being Fullstack is like being good at Back-end and Front-end, while specializing in one of those areas, means diving deep into them, while having shallow knowledge of the other. Also, it looks like that "deep" understanding isn't needed most of the time, so probably a Fullstack would be good enough in 95% of the cases.

This got me thinking: is it better, career wise, to be a Fullstack developer? Or is specialization the way to go?