I don't know you or your hot-button issues. Let me assume, however.
You care about the environment, i.e. clean air, clean energy.
You care about hate-filled, toxic society, i.e. one in which attacks (verbal and otherwise) come about because of hate-speech from a candidate.
You care about the economy, i.e. regulation of financial and other sectors is important.
You care about women's rights and appointments that could affect the SCOTUS for the foreseeable future.
Obama also had many corporate supporters; he has failed to direct prosecution of the leaders of the financial institutions that collapsed our economy: was he better than the alternatives, McCain and Romney? I'll leave you to ponder that.