Each HDL has its own strengths, weaknesses, tool support & application areas. So each has its place as long as -for specific designs/projects- it's better than alternative HDLs. Users can define "better" for themselves.

Not to mention: existing designs already done in Verilog, VHDL or whatever. Converting such a design from one HDL to another may no be easy.

So as always: use the best tool for the job.