Yeah, my grandma had an extremely active social life well into her 80s (she died at 85ish) even with significant mobility problems. She lost my grandpa 15 years before she died.

Definitely possible, I'm just highlighting it as hard. The last time "making friends" was easy was in university/college.

For me (anecdote), it's only gotten harder as I've become an adult... then married... then harder as a parent... etc.