Because I love C++, I love Code::Blocks, I love MinGW and GCC and I would like to have the most updated version of compilers.
Furthermore, it seems that the TDM-GCC project has been abandoned (looking at the website)
However, even CB 17.12 with GCC 5.1.0 is a great IDE / compiler and it helps us a lot to work.
The nightlie GUI is beautiful.
Congratulations to the whole team.