I have this problem too. I thought the solution might be automatically closing untouched tabs after X minutes, but I left those tabs open for a reason — there'

I have this problem too. I thought the solution might be automatically closing untouched tabs after X minutes, but I left those tabs open for a reason — there's something that at one point was important to me. But then why do tabs just sit open? Maybe close tabs after X minutes, except for an exemption list of domains — but that's not a very intelligent solution. I don't know what the answer is except for declaring tab bankruptcy every few hours (or days if you're (un)lucky).