They may seem so, craft, but generally they are not as bad as you think.
Most FS schemes apply an “actuarial reduction” of around 5% for each year the pension is taken early. So if the pension is taken, say, three years early, annual payments will be reduced by 15%. However, what is often overlooked is that although the pension is only 85% of the “full” value it is being paid for three additional years. This means that the recipient will get 255% of a years pension which would otherwise not have been taken. If you do a quick calculation you will see that it twenty years into the pension before the cumulative take of the full pension overtakes that of the reduced rate.
This does not take account of the fact that, at present anyway, generally pension increases are outdoing pay increases and also does not include extra income that can be earned from the recipient’s lump sum (which most FS schemes include) which, although also subject to a reduction, will also be paid early.