Supporters of Bitcoin should be in favor of making it illegal in as many jurisdictions as possible. It's the only way to be sure it's as resistant to government power as it claims to be.
https://www.google.com/search?q="this+is+good+for+bitcoin"
I understand what you're saying, but I find it hard to believe making Bitcoin illegal worldwide would be good for those who invest or simply believe in the future of Bitcoin.