Proxmox is available free. You pay for support and maybe other things with a license, but you can download it and give it a spin at no cost. I just switched to Proxmox around 1m ago when I restarted my homelab project after years on hiatus. I used to use Esxi before Broadcom bought VMware and decided to suck. I like it so far.
It might be overkill for your needs. I’m running it because I want to play with setting up and managing Win Server (I only have experience managing existing servers on Win), so there’s a distinct reason for me to be on Proxmox even though I’m a Mac and Linux person. I agree that it might be overkill for your i5 if you only plan to run one Ubuntu instance on it. However, a lot of homelabbing is about having an environment to try out and learn new skills. If that’s something that’s interesting to you, it might be worthwhile.
Keep in mind that you could also run KVM for virtualization if you find reason for VMs. You’re not limited to Proxmox. And if you see no need for VMs, you already have three devices to do the things you bought them to do.
Oh, does our war-mongering get in the way of science? How could anyone have seen that coming.
In a sane world, we’d try to build a healthy relationship with China. We’re so interdependent that it’d be a win for both sides. Instead, we need an outside bogeyman to distract from the fact that the real villains fucking us around are our own compatriots. Rich assholes get away with distracting the masses yet again!