I am haveing some problems with my gaming group, nothing major just slight problems here or there. One aspect I find my players not entirely understanding is the power of fate points and what they can do. One example is from my game last night. My acolytes are investigating some criminal organizations in an underhive to try and find out if some dark mechanicus are using said organizations to funnel money to fund their endevors. Flash forward a bit they are being eaten alive by hive spiders about the size of a cat. One of them gets an idea and says that he will charge the largest group of spiders pull the pins on two of his frag grenades and drop them at his feet. Basically your typical heroic sacrifice, I say if he can pass a willpower test why not. So after a few rolls over half the spiders are dead and the explosions cooked off a third grenade he still had on him; amazingly I roll poorly and he survives, he is out cold but alive. He asks if that act justifies him gaining a fate point I say yes; sadly he rolls poorly on the effects the spiders poison do and winds up burning a fate point to stay alive.
The issue is that he and a few others assumed they were going to die and re-roll new characters, I was almost certain they would not as they all at the time had 2 or more fate points ( a few now only have one but whatever). The point to all this is that the people in my gaming group are used to games that are less forgiving to deaths and I can't help get the feeling they are starting to feel like perhaps combat is to easy or something. Now this is not the first time the group has survived some amazing circumstances with little to no fate point loss. I am the best gm ever I can't roll higher than a 3 on damage. As a result I am constantly having to explain to them that they survived not because I am super nice but because of lucky rolls on their part. Am I going to have to just make an insanly hard encounter kill 3 or 4 of them to prove the game isn't a cake walk. I don't want to do this but I don;t know what to do. Their feelings of the game being easy could also be my fault I am new to gming and so my first few encounters were kind of easy. Has anyone else had this problem and if so what did you do.