I've been biking recently, but I used to take the subway. That's socialist. Taking a cab would be capitalist. None of those activities are inherently socialist

I've been biking recently, but I used to take the subway. That's socialist. Taking a cab would be capitalist. None of those activities are inherently socialist or capitalist. Individual actions, responding to one's own preferences, tastes, needs, and incentives, can't really be socialist or capitalist. Socialism and capitalism are macro-systems about how the fruits of labor should be distributed/exchanged.