Ultimately, it is not just about how new the site is, but also about how much faith we have in the company behind it. For example, would anyone leave their personal information with 1xbit and the like? Certainly not . People need to know the site is secure and reputable, and that there is a serious business behind it.
With Roobet, you have both: an old casino, and its good reputation.
You can verify it by search engines or by look at trust feedback, trust, flag and scam accusations. Search engine helps you to verify reputation of Roobet widely, and others will help you to get overview about it on this forum. I believe if anyone does this homework, result should be very positively for Roobet casino.
It is reasonable because Roobet itself is a very good casino, trusted, creative and well customer support.