It is very important. Since people should be completely free to sell/buy without a big hassle.
Liquidity allows new investors and a recycling process for the old ones (who doesn't want anymore to own the underlying token).
Personally, I avoid at all cost iliquid tokens (because If I get in I'm fucked for the slippage), but I'll be eve more fucked when I'll try to get out.
I want to minimize at the minimum the impact of that. And that's why I want (I'm already doing btw) to build a solid foundation in HBD.