LIVE IN PRESENT AND NOT IN PAST OR FUTURE

Almost all spiritual gurus are preaching us to live in PRESENT and not in PAST or FUTURE. I totally agree with them and try to enjoy in what i possess and not what i don't have or should have. It certainly makes my daily life very happy and contended. But i wonder why do we keep talking about our next life (ie future) and Ram & Krishna (ie past). Our present is entirely different. It's a democratic, secular free country now and people need freedom of thoughts and speach.