There is no need for a client library (for rendering) until you need to make a lot of DOM manipulations or If you are making a single page application. (React / Angular / Vue).

Unless your application/website is divided across multiple pages and doesn't requires a lot number of DOM manipulations (Lot of event based animations / Async transfer of data / ... ) there is no need for client rendering .. server works best (ejs/jade for node).

There is no need to add complexity by un-necessary adding client rendering library and then using server-rendering for SEO & first load unless you want to do this for learning.

Front-end rendering best suited for - E-commerce/ Real State websites/ Portals where user need to apply 10's of filters , sorting and other operations which requires re-rendering of view extensively.

For simple blogs / portfolios / websites its of little to no use.