* CPU is not good enough for new games
* Motherboard is broken
* You don't have enough ram slots (Trying to come up with reasons)
* Not enough PCIe slots
* Doesn't not support sli
* Don't have the I/O you want
Theres lots of reasons but your motherboard is fine right now no reason to change it, unless you want coffee lake (Scoket: Z370) which isn't really a big deal for me, I'd stay with your mobo for a few more years.