I think what you mean to say is that a planned economy is fundamentally, theoretically, and practically broken. Socialism doesn't necessarily mean a planned economy, there can be socialism with a market economy. Although I think some more economic planning is clearly necessary, just look at the environmental problems the "let it run" way of thinking has caused.
I think socialism is something that we need to transition into as our technology improves and does more work for us. What other option is there? If we don't have enough jobs for everyone, the only two options that I see are 1. We create new useless bullshit jobs just so we can continue using the current system of resource allocation, or 2. We create a system in which the means of production are at least partly owned by the society as a whole so the benefits of automation are more evenly distributed.
I think socialism is something that we need to transition into as our technology improves and does more work for us. What other option is there? If we don't have enough jobs for everyone, the only two options that I see are 1. We create new useless bullshit jobs just so we can continue using the current system of resource allocation, or 2. We create a system in which the means of production are at least partly owned by the society as a whole so the benefits of automation are more evenly distributed.