jsights and Ava Lind - I'm hearing you both! I used to make beautiful cards and there is no reason at all why I stopped. I just did. The expensive rubber stamping supplies caused me guilt for years, then recently I gave almost everything to a friend's young daughter, who was ecstatic.
My sort of compromise is that I've kept a very small selection of coloured card and some white card blanks, and now when I come by a nice picture that could be used to make a card, I put it in my very small box of supplies. When I've got four or five pictures, I make the cards. All I need is scissors and tape, and possibly a ruler, and four or five nice cards emerge. They're not as impressive as my former masterpieces, but my life has changed and I'm learning to be happy with less than perfect. I'm sure you'll agree that a really good picture double mounted on appropriate coloured card/paper can look really effective. Before I always felt like I ought to use the expensive stamping supplies, but because it was such a big deal to get it all out and clear up later, I just didn't begin and ended up buying cards. My new method is so easy and simple and GOOD ENOUGH!!!!
I think it possibly could be the same with the painting - could you compromise in some way to make it less expensive and time-consuming? I certainly think it's worth looking at the digital options, but if you want the feel of real paint on real canvas, could you go smaller, or stick to one medium? I'm not a painter, but I can understand the appeal of the real thing.