My experience with Intel Galileo is pretty much the same as yours... but "compressed" in a few days/weeks and I finally had it up & running up to now.
Even when Galileo and Raspberry Pi seem to be intended for different applications I would buy a Raspberry Pi if I'd have the required time and money, which didn't happen so far.
If you want to try once again, please follow the step-by-step guide guide documented at the Intel site, and let me (us) know the failing step, screenshots help a lot to know at our side what's going on.
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Could you let us know which guide you followed and in which step you had issues? I recommend you to follow this guide: https://software.intel.com/en-us/iot/library/galileo-getting-started. It might be that you are not following the current guide but an older version.
As FGT mentioned, please let us know in which step you are having issues so we can help you better.