I have past experience with this, therefore I guess I have valid insight and advice. But it still kind of ends up as opinion...
Way back when, I was in a stagnating band, not many gigs and when we did gig it didn't pay much after splitting 4 ways. Eventually that band shut down so I decided to go solo! Something I'd always wondered if I could pull off. This was my chance.
It took a LOT of effort to build up my show ('Solo-Act' is correct on this). I already knew songs, lead vocal and guitar, but I needed a bunch more material with better variety. I was savy about midi sequencing, sound modules, mixing, PA and all that stuff, so I knew I could pull it off technically to a high standard.
Months of effort and expense later I had about 50 songs down plus all the gear I needed to go out, tested and ready. I made demos and promo materials and talked to some booking agents about finding me some gigs. Finally I got my first booking, a weekend at a nice pub. Soon I had a few more, plus interest in return bookings. New Years Eve.. big money! EVERY gig I did, first to last, paid more than I was used to from the previous band.
To recap: I loved the idea of it. Wondered if I could pull it off. I worked hard and I DID IT. And I can say it was a success!! At first I felt a big sense of accomplishment, achievement. Big Win all around right?
The only problem was, I quickly discovered that I hated playing solo gigs. DO'H!
Practice alone. Show up at the venue alone, talk to pub managers.. alone. Load in PA and heavy gear... alone. It's a workout. Time to play, still the best part, but it feels like Karaoke. Because it is. Not nearly the same feeling as real live music in a band. Alone on stage means you do 100% of the "entertaining". Host and MC, audience banter, jokes, talking to drunk people. You really need to have the right personality to do it well, and I probably don't. Occasional awkward silence from stage when you have to step away from the mic to deal with a tech issue, tuning, guitar change. With a band there's always another guy to talk on a mic. Set breaks? I'd try to roam around and make new friends, but it's more fun to hang with your band buddies and talk about the set or whatever.
I also found out how exhausting it is to do 100% of the lead vocals all night. I know lots of singers do it, but for some reason I found it physically exhausting, especially when you play a 4 hour set 2 or 3 nights in a row. I had no idea how hard that was. Maybe just me. I've always been in bands where lead vocal duties were shared.
It didn't take long before I no longer wanted to do the solo thing at all, at any price. So that was that. Been in a real band ever since. Still not enough gigs and the pay is still shitty, but I love it
Interesting lesson learned.