Also an older dev (56) and I agree with other's comments that learning the myriad FE frameworks feels like chasing my tail. I've carved out a role where I work

Also an older dev (56) and I agree with other's comments that learning the myriad FE frameworks feels like chasing my tail. I've carved out a role where I work primarily on the back-end of my company's platform, about 50% coding, about 25% mentoring/coaching, and the rest is working with our product managers and business users to develop new functionality. I feel valued and feel like I'm making an important contribution to the company. But I am concerned that one of these days I'll no longer have the cognitive muscle to do all of this.