Is it worth to change my theme on my next site?

I created 2 websites with the7 theme.

I am 100% satisfied with the theme. I was really fast in building my second site and it is easy to handle now.

I have 95-100 scores on page speed.

I have no comparison to other themes. I read often about light weight themes and it's better for speed.

Do you think it's worth switching to an other theme? I have no coding skills either.