I used Matlab in undergrad and Python a lot in industry. I got a Mathematica license recently being impressed with the documentation and the sheer breadth of stuff built into the language in a consistent manner. I ran into an issue when I found out that my license could only have 4 kernels activated at a time. I was able to close out the old sessions with the task manager, but I almost (exaggeration) punched my computer when the message popped up about licensing. Wtf? How much did I pay for this? Maybe I'll just stick with Python & Julia for what I need. I just traded one frustration for another.
