Are Bus Fares Actually Fair?

It now costs me £2.60 just for a bus into town.  As if the price wasn't high enough, I then find myself standing up the whole way there.  Every bus has that little sign on it, the one that says, 'Please remain seated until the bus has stopped.'  What about the people who weren't seated in the first place?  Or does their safety not really matter?  When you pay full fare to travel on the bus, the least you can expect is to sit on a seat.  If we have to travel on over-crowded buses, in un-safe conditions, the least we can expect is some sort of compensation.  They should introduce some sort of voucher scheme, where if you pay full price for a bus ticket, and then have to stand for most or all of your journey, then they should issue a voucher which entitles you to a free journey next time.  Or, they should offer a reduced price to those who are expected to stand.  When so many travel for free these days, why should the rest of us foot the bill, when we're the ones expected to stand.