When designing a wireless network, which would be a compelling reason to use 5 GHz?

The 5 GHz band for 802.11 a/n/ac has 24 nonoverlapping channels. The 2.4 GHz band for 802.11 b/g/n has only 3 nonoverlapping channels. If the clients are compatible with 802.11 a/n/ac, it is desirable to use 5 GHz. 2.4 GHz goes further than 5 GHz; therefore, 5 GHz should not be used when distance is a concern. 5 GHz will not allow more clients to join the wireless access point (WAP). There is the same amount of interference on both 2.4 GHz and 5 GHz.