Increase conversion rate by sending traffic to a specific landing page that matches the ad messaging/creative. There are very few instances when you should send someone to your homepage, generally you want people to take an action and homepages are full of distractions, AND they have too many variables that won't match your ad copy/creative. Best practice is always to match the ads messaging/creative with the landing pages messaging/creative: this increases the relevancy and the quality score of the ad, which often increases CVR while decreasing CPC. Win-win!