They are bikes. If you got a good one with good parts you will be fine.

Generally when it comes to bikes it is best to avoid stuff with Shimano Tourney, Altus and Claris and equivalent in other manufacturers. Stay away from hi-tensile steel frames and forks and in many cases non-hydraulic brakes (for many modern bikes though not a hard fast rule) and you will generally have a decent modern bike. There are some other good indicators of a bike to avoid like Neco headsets or similar no-name type parts and coil forks on bikes less than 2k. However if you are rarely riding the bike and don't rely on it for anything some of those parts while not great will be fine for that once in a blue moon ride.