I USED to LOVE to build at night but with age...crappy eye sight....and being ready for bed by 9:30 -10, that is more difficult.
As far as starting over, like you......It sure has gotten expensive, hasn't it?? It amazes me that those tiny bottles of Testors paints are over $2. You can build a small 1/72 model.....The model might cost $7-8. But the tools needed can EASILY push close to $50 +.