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Why do we say 'I'm going home' but not 'I'm going to home' ?
Can anybody help with this please?
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GuestWhy do we say 'I'm going home' but not 'I'm going to home' ? Can anybody help with this please?
Every language has exceptions to the general rules. This is one of them in English. Certain words connect directly to "go" without "to".

go home; go downtown; go away; go there (See the previous post.)

CJ
Comments  
"Go home" never has a preposition as compared "to be at home". However, it shouldn't be forgotten that "go to" is used in many other instances when movement is implied: go to the doctor's, go to the supermarket, go to the cinema, go to meet him at the airport and so on. I would say "go home" is the exception to the rule.
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it's not only home. We also never use (to) for these words:
abroad, underground, downtown, uptown, downstairs, upstairs, in, inside, out, outside, there, here, anywhere, nowhere, somewhere.
 CalifJim's reply was promoted to an answer.