Should the government require children to be vaccinated for preventable diseases?

They should, but parents can opt out. If they choose to do that, they meet with a health/social professional who can discuss the risks and implications of that decision.

Its a dodgy topic kids should choose but theyll alsways say not to needles so its difficult

Yes, except for children with allergies to the vaccines or children who would otherwise have and adverse reaction to it (with medical confirmation)

I wish to say yes, but it violates the parents' or child's rights/beliefs if they are forced to when they do not want to.

Yes but only those required after birth and in early childhood, that have been well established and researched, and with caution towards each individuals health situation

The Parents of the child should be able to make their own decision on their child regarding vaccination

Yes, but only for vaccines that have long term safety data. New vaccines must be optional for a minimum number of years until proven safe in real life.