It should be utmost priority to reduce the load time of any site. Slower the website bigger the risk of turning site visitor frustrated and wondering and ultimately loosing them. Even some search engines while indexing timeout a site once it fails to load within specified time.
The most important step in reducing the load time is identifying the causes first. The website or blog constitute of different elements like scripts, widgets, images, videos, animations, etc. each of this can tremendously increase or decrease your webpage load time.