Easy management: All marketing tools and affiliate links are provided by the merchant. You never have to bother creating banners, links and all that. You only have to use what has been provided by the merchant. Also, you do not have to handle orders, ship any inventory, or deal with the customer. The merchant handles all that, so you are only focused on promoting the offers to your audience.
What’s the point of even having a website if it doesn’t look nice on every device? 61% of users are unlikely to return to a mobile site they had trouble accessing. If your site is not responsive, those potential customers will find another business. More and more people are making purchases through mobile devices so make sure that your website is mobile friendly.
There is no need to waste your time on the conceptualization of what kind of a web design your business site should feature. Take a look at the examples of some of the most successful businesses in your niche. What tricks and hacks do those use on their web platforms? Learn from their example and create your own design (but don't copy your competitors!).