A Sikh is not a worshipper. Sikhi condemns worshipping. Sikhi is not based on worshipping either. A worshipper prays for unknown things expecting unknown results. A Seeker seeks for things he can learn from.
Worship can be defined as love too. It depends on what worship means to you. The highest form as someone mentioned is love, easiest path to Him. God doesnt need you to worship Him, or even love Him, you need this...this is the difference. Don't ask why He needs it, he doesnt 'Denda dey khandey thak pahe, juga jugantar khahi khahey' Guru Ji says in Japuji, he gives and gives and never tires of giving, even though the recievers tire of recieving.
The understanding I am starting to get about the conception of God in Sikhism is that God is the underlying creative force of the universe. In terms of 'reciting the name of God' - I take this to mean not a meaningless ritualistic or submissive act but, instead, an attempt to connect oneself with an underlying divine consciousness that pervades everything.
The question is I think somewhat related to the idea of consciousness --> how is human consciousness present in the universe? There are numerous theories and I wouldn't want to dismiss them, even the idea that it simply 'happened'. But in terms of choosing ways to approach life, the idea that my consciousness is itself an extension of a universal mind - this is not only 'comforting' in a basic sense, but is also academically/philosophically defensible. There is, I think, in a very strange, paradoxical sense, an 'empirical' basis for this - the experience of listening to gurbani, of being engaged with 'the religious' has an effect on people. It makes them feel loved, it allows them to let go of greed, anger, hate and the material. Is it merely a psychological 'trick'? I don't know. But am I starting to feel a connectedness to that which might transcend my own mind? - possibly.
While reading this, the thing which comes to my mind is 'Hazara Hazoor' - the omnipresent creative force. Personally, I feel Once we lean our understanding towards this, then this question will yeild its answer on its own.