Flexor the Mighty!
18/100 Strength!
Not sure why you're laughing. Yeah, I put "IME" because I can't speak for others, but I feel pretty comfortable in saying that in general, players were more cautious in 1e than they are in 5e because that's how the rules are designed. We can have different preferences and playstyles, but the rules are objective:
* In 1e, PCs were much more fragile because they had much fewer HP due to things like lower hit dice, and no longer getting CON bonuses or rolling for hp after level 9. A 10th level magic user in 1e is going to have an average of 23 or 24 hp. In 5e that's going to be much higher. So 5e PCs can take a lot more punishment than their 1e counterparts
* In 1e, there are a lot of save or die effects. These don't exist in 5e
* In 1e, there are level drains. Not in 5e
* In 1e, traps and frequent dungeon hazards are much more deadly (slimes, damage from traps, etc)
* In 1e, you didn't get raise dead until 9th level. In 5e you can raise a dead ally at level 5.
* In 1e, level gaining was much slower than it is in 5e.
All of those things means that you need to be more cautious as a player in 1e because you can't afford to make a mistake. 5e is much more forgiving. And it's a fact that peoples' level of caution is reflective of the amount of risk in any given task. The more risky, the more cautious, as a general rule.
I think the two bolded are huge, you level so fast in 5e. You might play a couple modules in 1e before leveling to 2nd. In 5e you are hitting level 2 after the first session it seems. You hit level 5 very quickly, where in 1e, L5 took a while and quite a few adventures. .