Absolutely nothing wrong with Fortran. In the 90s I worked on source-level optimizations in the HPF (High-Performance Fortran) compiler at Thinking Machines: not having a numerical processing background (and having only used Fortran for one course in college, which was Microsoft Fortran with each compiler phase on a separate floppy) it was fascinating to work on, and I found Fortran 90 to be pretty compelling in a lot of numeric operations. There is a lot of code out there that was written and debugged years ago and there is no reason to change.
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Absolutely nothing wrong with Fortran. In the 90s I worked on source-level optimizations in the HPF (High-Performance Fortran) compiler at Thinking Machines: not having a numerical processing background (and having only used Fortran for one course in college, which was Microsoft Fortran with each compiler phase on a separate floppy) it was fascinating to work on, and I found Fortran 90 to be pretty compelling in a lot of numeric operations. There is a lot of code out there that was written and debugged years ago and there is no reason to change.