It's normal to get attached to things and expect them remain the same like the first day. Often this is impossible, but for most articles it is possible to re-freshen them or protect them to last longer and make them look like new again. For bicycle helmets there is exactly this possibility: you could simply replace the padding and closure systems that are ruined with new ones, a good wash and it will be as good as new, ready to accompany you for your long rides!