It didn't cost too much and it's flexible - running Ubuntu server I can stick some Docker containers on it, run a/v for the network, Nagios, anything really. It's a good learning exercise too when you consider anything that impacts my son accessing XBox Live is essentially mission-critical in this house.
When I replaced my ISP supplied router with it (BT Home Hub 5) I immediately saw better performance and less latency. Unfortunately I forgot they deliver their premium sport channels over IPTV/Multicast so it was a couple of days learning that but i've acquired a new skill for my CV, so hey-ho.
BTW if the processor is like mine the 2.4ghz thing is the burst clock, it normally idles are 800mhz, which is important as the box is fanless.