My husband needs a hobby...

Lately my husband has been getting so frustrated and anxious because we spend our evenings sitting on the couch watching TV. He says he feels like he's wasting his life just sitting around doing nothing, but when I ask him what he wants to do he says he doesn't know, but not this.

We both work full time (from home) and have a 2 year old. In the past year I've also had 2 pregnancy losses and have been trying to conceive. I'm now 7 weeks pregnant. Between all of that, and just normal life things I'm usually ready to just chill on the couch after we put my son down. It's also winter and gets dark at 4pm.

It's like he gets annoyed with me that I allow us to sit around in the evenings, but I don't even know what else we would be doing. I think the fact that he rarely even leaves the house during the week makes him super anxious about not doing much with his free time during the week. We do have pretty active and busy weekends, I don't know why he can't be okay with just relaxing.

What do other people do in the evenings?? What can I suggest my husband do to relieve this??