Hope I'm putting this in the right place! I've had my bike for years. I haven't grown much in that time, so I still fit it well, the bike still works as decently as I can remember it ever working, the only main issue with it is the tires deflating faster than before, but I can replace those at any time as far as I know. So my question is, how often is it generally recommended that you get a new bike? Can you use the same bike for as long as you want, will that be safe? Or are there certain signs that show it might be time to get a new one? Thanks in advance for any help or advice!