Every single one of these coins has an issue with low hash rate (or other issues if using PoS or merged mining) and can easily be attacked on that basis alone, plus the possibility of bugs or devastating attacks on major infrastructure components (exchanges, etc.), plus the very obvious and very real possibility that any particular coin simply goes out of favor and loses all or virtually all of its value.

In short no one should be putting their life savings in any of these coins, BCX or no BCX.