Pre-built or DIY build?

Hi all,

I'm looking too get back into riding as my family is likely wanting to ride soon

I want something that I can use for fitness purposes, can commute on and can take to leisure riding areas like lakes and stuff. It seems that gravel bikes are the best fit however it seems that 95% of offerings come with drop bars and I'm set on flat bars.

Would something like the pictured specialized sirrus x 2.0 serve me well or would I be better off building something myself for a similar price?

Thanks
SnapSh0ts