1) particularly, the US market has proved to be uptrend in the long term and many have multiplied their finances simply by holding on to the right stock(s).
2a) I’m not based in the US.
therefore, to do intraday during US trading hours would mean starting at 9.30pm and staying up till possibly 4am: hence eating into my sleep and health.
2b) I’m not a full-time trader. which also means I hold a regular day job, and will require regular sleep most of the time to preserve my function in the long-run. (whereas having a long term investment would mean that I wouldn’t be checking-back on a daily basis, giving me ample sleep)
3) since short term investments or intraday trading would require regular buy and sell analysis, technically, it wouldn’t be making your money work on its own. so that would literally mean taking up a second job.
4) the pressure can quickly add to daily stress, especially with beginning investors. and with the possible lack of sleep on top of that, relationships and daily decisions can take a setback. (the goal of investing should propel towards financial ease or freedom and not lifestyle deterioration)

the pre-IPO purchase is a very tempting one, but keeping in mind the 180-day lockup, it equals high-risk .
better to let the stock IPO to start trading - there always seems to be a fresh beat with new stocks coming to life!