Don't you know that in reality we (i mean heart) achived les than 50% successfull landing on mars ? i think the game is prety realistic in that way.
Landing on the red sister of hearth is and will always be a hard and unpredictable task.
@FredyC & cky2250 as mars have an atmosphere using parachutes is relevant (it is even used for real mars landing) but as mentioned by cky2250 mars atmosphere is too thin to allow the use of parachutes alone this is why skycranes are used.
I agree whith the "no landing failures" Loophole suggested for those how prefer fun over realisme but i would not use it at all.
but less failure wouldn't be realistic at all so i voted no ...