When I realize that still 30 years ago Slavs in Balkans were genociding each other, and at this moment two Slavic groups are viciously fighting each other while non-Slavs don't even notice a difference between them, I doubt this heritage and culture are worthy of cultivating or praising.
Think better of mankind: the conflicts that seem insurmountable today will be overcome. Sweden and Denmark hold the record for most wars, the land that is now Italy was a failed state for many decades at a time, the Japanese spent the better part of the Muromachi period fighting each other grimly.