In brief, we are inclined to go along with someone’s suggestion if we think that person is a credible expert (authority), if we regard him or her as a trusted friend (liking), if we feel we owe them one (reciprocity), or if doing so will be consistent with our beliefs or prior commitments (consistency). We are also inclined to make choices that we think are popular (consensus [social proof]), and that will net us a scarce commodity (scarcity).
However, WordPress might not always be the right option for you. Although it is surely one of the most popular CMS platforms, there are certain circumstances where you want to see if there are better options for you out there! Especially if you are new to creating and running a website, it might take longer than you think to actually get things right at first. Although there are plenty of helpful tutorial sites like Beautiful Themes and WPBeginner dedicated especially for the purpose, sometimes it is a hassle.