India, Jan. 31 -- It's those pesky Millennials again! Business analysts have blamed young people for killing so many industries. Our love for artisanal businesses has put department stores in trouble. Our streaming binges have pulled the plug on cable TV. We want situationships, not marriage, so diamonds are going unsold. We don't want golf, long-term jobs, or handkerchiefs. We prefer to spend money on pizza-making workshops, pottery classes, knitting groups, hula hooping, heritage tours, even pickleball.

So, what's next? The cool kids are into tufting, mixology, sound baths, watchmaking, perfume crafting, Japanese tie-dye, magic, acapella harmonising and building terrariums. Many participants are signing up solo, bringing a date, or goi...