Growing up online: why the days of our digital adolescence are numbered. It’s depressing to see that one consequence of new social spaces is a marked increase in the amount of genuinely awful behaviour performed by otherwise functional adults. Seeing ill-advised tweets, oversharing via Facebook updates and emotive personal posts, I’m reminded of the giddy immediacy of my teenage years, in which I existed in a state of selfish isolation, immersed in the frenzy of the Now.