All Such Advancement of science and knowledge in creating robots is nothing but an action of the covering influence of the illysory energy and it encourages violence in society.
Everyone is hankering for happiness because by nature we are happy : anandamayo ‘bhyasat (Vedanta-sutra 1.1.12). As spirit souls we are naturally happy, blissful.
The disciple and spiritual master are never separated because the spiritual master always keeps company with the disciple as long as the disciple follows strictly the instructions of the spiritual master. This is called the association of vani (words).
Srimad Bhagavatam 4.28.47,
Krishna consciousness, devotional service to Krishna, is the ocean of eternal bliss.