Indeed.
I consider suspended animation as a means to render a non-survivable journey survivable, will forever exist only in sci-fi.
I agree with you it would be a gargantuan benefit to such enterprise.
But in practical terms even bears can't stay in hibernation long. Not long enough to get them to Proxima Centuri.
I believe the major obstruction is public funding. It's simply too expensive for one planet to afford. And in most scenarios, there's negligible pay-off for those left behind.
Speed is also a huge problem even if we had suspended animation.
The speed of light would have to be achieved or at least close to it for interstellar travel to ever become a reality.