Not in my case, I started with monthly/weekly then daily/60 minute then skipped day trading as I couldn't find low enough losing percentages and went to scalping. I think of it more I was getting good in one area and needed more challenges. But your right as we get older, more drawn to allocating more toward longer term than intraday, in my case-can't hedge one minute bars which means risk is HUGE compared to longer term.
Automate is the answer, then you can spend all your time designing other methods.
It can be several factors, like the risk different? Something you doing differently in one than the other besides timeframe. My risk is actually larger in scalping than 60 minutes, but that is due to approaches in hourly of entering on support/resistance and scalping is a mixture of swing distances and not support/resistance, actually built most of scalping tech to keep breakeven percentages near 50% because I average down, but also keeping losing percentages low so profitable based on single contracts often times less percentage wise than breakevens, but my breakevens are actually seeking one ticks when time runs out as these methods require being out in so many bars.