While BTC doesn't have as much utility as smart contract platforms like Ethereum or the proposed scalability of EOS/Cardano/IOTA etc. it would be wrong to say it has no utility.

Lightning Network is just starting out, but growing nicely, and already we can see the effects, with quick, low cost transfers. No coincidence that Reddit plans to re-launch BTC payments soon.

What is perhaps more interesting for the future of BTC utility is blockchain interoperability. There are now a few projects of note working towards this - ICON, AION, Wanchain, Blocknet. Its technically challenging, but at least one of these is likely to succeed, and then we have a game-changer scenario. Suddenly Bitcoin's first mover effect and still unchallenged position as preeminent store of value could be cemented.

BTC has proved remarkably resilient over the years, and still has by far the strongest community and great devs (altho arguably Ethereum has the best). The network effect is there - a lot of people have heard about Bitcoin, but few have heard about anything else. Once the masses come to crypto, what do you think they will buy first?

Im not a BTC maximalist, and technically speaking, its a dinosaur, but I'll sure be holding a portion of my portfolio in BTC.

Tldr; don't write BTC of too soon - its got some utility that will likely improve over time.