Lord Krishna is known incarnation of the supreme ! accurately to understand for 'the supreme personified' ! personification of all the qualities is one of the chief characteristics of hindus since vedic era but without deviating from vedic philosophy mentioned through six system. your querry is very superficial if you worship Krishna out of love if not out of love then u r destined to be bewildered on account of the cosmic dissoluter force personified and worshipped by millions in form of Lord Shiva ! just u meditate over the power of dissolution happening all the time around you and find out the beauty of power used in showing that simple change through personified form i.e Lord Shiva ! Lord Shiva if tAmsik then we must think over the beauty of tAmsik state of the think in original way which i wud like to narrate on some other occassion but i wud like guide to go through Saamkhya philosophy propounded by sage Kapil beforehand.
with love !
The_Blessed_Guy