- the problems/challenges that you have to face daily are mostly related to code issues with the physics itself?
- Is there room to improve our knowledge of fundamental physics while working on it?
- Do you enjoy doing it? why?
Much of what you do on a daily basis is "grunt work". In my opinion, this doesn't make the work less enjoyable or less rewarding. On the contrary, when you achieve a new result, the fact that you have slogged through hundreds of trivial details to get there makes it all the more rewarding.
I can almost guarantee that the problems you will wrestle with on a daily basis will be almost entirely related to numerics and coding.