Why God is not giving infinite happiness to everyone? Why all this remembrance talk?

Hindu answers, 'Mind of any living being who is in finite area has limitations in terms of amount of happiness and amount grief it can withstand. On crossing this limit, death results. This necessitates purification of mind. Remembrance of God does exactly this function. As God is pure personality, it washes mind of impurity. The pure mind then can be transformed in to divine one capable of sustaining infinite happiness. The only way to seek permanent happiness, permanent life, complete knowledge is by knowing God and there is no alternative way out.' Next question "What is the impurity in mind?"
Impurity is always in the matter contents of anything. The contents of mind, which are thoughts, desires, attachments, are impure. All those contents do not allow transformation of mind. Therefore mind needs to be emptied of these impure thoughts of this world. These thoughts are about objects and personalities of this world - likes and dislikes, love and hatred, friendship enmity arising out of five objects of five senses namely eye - seeing, ear - hearing, tongue - taste, nose - fragrance, skin - touch.
It is not possible to brush off these thoughts because idea of happiness and grief associated with it. But unless mind is emptied of these impure thoughts, mind cannot be made pure which is basic requirement for transformation of mind into divine. The way is to fill the mind with pure thoughts of God which would automatically drive out impure thoughts. Thus remembrance of God is of prime importance in purification of heart.

One more contradiction between Hindu and Islam is about non-veg.
Islam allows it while Hindu putting it under Tamas tag forbids it and declares hell as outcome for the same.
Our working principle is God is impartial and hence can not make difference in sentence depending on religion. Hence we need to discuss.
Non-veg essentially inflicts pain to the one being killed. It is accepted as inflicting pain to others is a sin and every sin is punishable. Thus eating non-veg is punishable in any case irrespective of any doctrine of any religion.
Regarding eating fruits and vegetables no pains are observed. Thus eating of non-veg is punishable and eating veg is not.
Thus in this case Hindu would prevent you from sufferings.